Coin-shaped patches of irritated skin-most common on the arms, back, buttocks, and lower legs that may be crusted, scaling, and extremely itchy. The word "nummular" is taken ...
1. Formation of an eruption resembling eczema. 2. Occurrence of eczema secondary to a preexisting dermatosis.
Abbreviation for effective dose; ethyldichloroarsine.
Abbreviation for median effective dose.
SYN: ethylenediaminetetraacetic acid.
Estimated date of confinement, the estimated calendar date when the baby will be born.
* * *
Abbreviation for estimated date of confinement. See Nägele rule.
The external genitals. [G. aidoia, genitals]
The swelling of soft tissues as a result of excess water accumulation. Edema is often more prominent in the lower legs and feet toward the end of the day as a result of pooling of ...
Edema, hereditary angioneurotic
A genetic form of angioedema. (Angioedema is also referred to as Quinkes disease.) Persons with it are born lacking an inhibitor protein (called C1 esterase inhibitor) ...
A common chronic, debilitating condition in which excess fluid called lymph collects in tissues and causes swelling (edema) in them. Lymphatic edema is called lymphedema, ...
SYN: edentulous. [L. edentatus]
Toothless, having lost the natural teeth. SYN: edentate. [L. edentulus, toothless]
A hexameric globulin derived from the castor oil bean, hemp seed, and other seeds. It will support the growth of animals in the absence of other dietary proteins.
USAN-approved contraction for ethylenediaminetetraacetate, the anion of ethylenediaminetetraacetic acid; various edetates are used as chelating agents to carry cations in ( e.g., ...
edetate calcium disodium
Contracted name for a salt of ethylenediaminetetraacetate, an agent used as a chelator of lead and some other heavy metals. Available in several forms: disodium, sodium, and ...
A line at which a surface terminates. SEE ALSO: border, margin.
- cutting e. 1. the beveled, knifelike, sharpened working angle of a dental hand instrument; 2. SYN: incisal ...
Ludwig, German anatomist, 1855–1918. See E.- Westphal nucleus.
USAN-approved contraction for 1,2-ethanedisulfonate, -O3S(CH2)2SO3-.
Gustav J.F., German physician, 1842–1910. See E. reagent.
Abbreviation for multiple epiphyseal dysplasia.
Pehr, Australian scientist, 1916–1977. See E. method, E. reagent.
Acronym for endothelium-derived relaxing factor, now known to be nitric oxide.
Frederick W., English ophthalmologist, 1863–1953. See Edridge-Green lamp.
A short-duration competitive antagonist of skeletal muscle relaxants ( curare derivatives and gallamine triethiodide) and an anticholinesterase, used as an antidote for ...
Abbreviation for Ehlers- Danlos syndrome.
EDS (excessive daytime sleepiness)
A neurological disorder marked by a sudden recurrent uncontrollable compulsion to sleep. Also known as narcolepsy. It is often associated with cataplexy (a sudden loss of ...
Abbreviation for expanded disability status scale.
Abbreviation for ethylenediaminetetraacetic acid.
To sweeten or render less acrid. [L. e- intensive, + dulcoro, to sweeten, fr. dulcor, sweetness, fr. dulcis, sweet]
James Hilton, English physician and medical geneticist, *1928. See E. syndrome.
M.L., U.S. physician, *1906. See Carpentier-E. valve, Starr-E. valve.
This is trisomy 18 syndrome. There are three instead of the normal two chromosomes #18. Children with this condition have multiple malformations and mental retardation due to the ...
A genus of Gram-negative, facultatively anaerobic bacteria (family Enterobacteriaceae) containing motile, peritrichous, nonencapsulated rods. The type species is E. tarda, which ...
Abbreviation for eastern equine encephalomyelitis.
Electroencephalogram, e technique for studying the electrical current within the brain. Electrodes are attached to the scalp. Wires attach these electrodes to a machine which ...
Any of a number of scaleless, snakelike fish. [M.E. ele, fr. O.E. ael]
- vinegar e. SYN: Turbatrix aceti.
Abbreviation for eye, ear, nose, and throat. See also ENT.
The thinning of the cervix which occurs before and while it dilates.
* * *
The thinning out of the cervix just before or during labor.
The result or consequence of an action. [L. efficio, pp. effectus, to accomplish, fr. facio, to do]
- abscopal e. a reaction produced following irradiation but occurring outside ...
A population group with an unusual frequency of a gene due to there having been only a small number of original members ("founders") one or more of whom had that gene. ...
The dose of a drug that will achieve the desired effect.
1. A measure of the accuracy or success of a diagnostic or therapeutic technique when carried out in an average clinical environment. Cf.:efficacy. 2. The extent to which a ...
1. C. Sherrington term for a peripheral tissue that receives nerve impulses and reacts by contraction (muscle), secretion (gland), or a discharge of electricity (electric organ ...
Effects, fetal rubella
The constellation of abnormalities, also called the rubella syndrome, caused by infection with the rubella (German measles) A virus before birth. The syndrome is characterized ...
Acquisition of feminine characteristics, either physiologically as part of female maturation, or pathologically by individuals of either sex. [L. ef-femino, pp. -atus, to make ...
Carrying away. An artery is an efferent vessel carrying blood away from the heart. An efferent nerve carries impulses away from the central nervous system. The opposite of ...
To boil up or form bubbles rising to the surface of a fluid in large numbers, as in the evolution of CO2 from aqueous solution when the pressure is reduced. [L. ef-fervesco, to ...
1. Boiling; bubbling; effervescing. 2. Causing to effervesce, as an e. powder. 3. Tending to effervesce when freed from pressure, as an e. solution.
The extent to which a specific intervention, procedure, regimen, or service produces a beneficial result under ideal conditions. Cf.:effectiveness. [L. efficacia, fr, ef-ficio, ...
1. The production of the desired effects or results with minimum waste of time, money, effort, or skill. 2. A measure of effectiveness; specifically, the useful work output ...
A stroking movement in massage. [Fr. effleurer, to touch lightly]
To become powdery by losing the water of crystallization on exposure to a dry atmosphere. [L. ef-floresco (exf-), to blossom, fr. flos (flor-), flower]
Denoting a crystalline body that gradually changes to a powder by losing its water of crystallization on exposure to a dry atmosphere.
Shedding of hair. SEE ALSO: defluxion (1). [L. a flowing out, fr. ef-fluo, to flow out]
- anagen e. sudden diffuse hair shedding with cancer chemotherapy or radiation, usually ...
Deliberate exertion of physical or mental power.
- distributed e. in psychology, learning that involves small units of work and interpolated rest periods, as contrasted with ...
Thin and widely spread; denoting the surface character of a bacterial culture. [L. ef-fundo, pp. -fusus; to pour out]
1. The escape of fluid from the blood vessel s or lymphatics into the tissues or a cavity. 2. A collection of the fluid effused. [L. effusio, a pouring out]
- complex pleural ...
Too much fluid within the fibrous sac (the pericardium) that surrounds the heart. The inner surface of the pericardium is lined by a layer of flat cells (mesothelial cells) that ...
Excess fluid between the two membranes that envelop the lungs. These membranes are called the visceral and parietal pleurae. The visceral pleura wraps around the lung while the ...
An antineoplastic and antiprotozoal orphan drug used in the treatment of Pneumocystis carinii pneumonia in AIDS and of Trypanosoma brucei gambiense sleeping sickness.
Abbreviation for esophagogastroduodenoscopy.
A procedure that enables the examiner (usually a gastroenterologist) to examine the esophagus (swallowing tube), stomach, and duodenum (first portion of small bowel) using a ...
Unabsorbed food residues that are discharged from the digestive tract. [L. e-gero, pp. -gestus, to carry out, discharge]
Abbreviation for epidermal growth factor.
Abbreviation for epidermal growth factor receptor.
The female sexual cell, or gamete; after fertilization and fusion of the pronuclei it is a zygote and no longer an e.. In reptiles and birds, the e. is provided with a ...
One of the clumps of cells resulting from the breaking up of the gonadal cords in the ovarian cortex; these clumps later develop into primary ovarian follicles.
The "egg sac" or ovary is one of a pair of reproductive glands in women. They are located in the pelvis, one on each side of the uterus. Each ovary is about the size and shape of ...
Fritz, Swiss internist, 1863–1938. See E. line.
Cary, U.S. physician, 1884–1966. See E. method, Bradbury-E. syndrome.
The calcareous envelope of a bird's egg.
Without glands. [L. e, without, + gland or glandula]
In psychoanalysis, one of the three components of the psychic apparatus in the freudian structural framework, the other two being the id and superego. Although the e. has ...
Repugnant to or at variance with the aims of the ego and related psychological needs of the individual ( e.g., an obsessive thought or compulsive behavior); the opposite of ego- ...
In psychoanalysis, a more or less conscious ideal of personal excellence toward which an individual strives, and that is derived from a composite image of the personal ...
Acceptable to the aims of the ego and the related psychological needs of the individual ( e.g., a delusion); the opposite of ego- dystonic. [ego + G. syn, together, + tonos, ...
Egophony with bronchophony. [G. aix (aig-), goat, + bronchos, bronchus, + phone, voice]
Marked by extreme concentration of attention upon oneself, i.e., self-centered. Cf.:allocentric. SYN: egotropic. [ego + G. kentron, center]
Extreme self-centeredness, self-appreciation, or self-content. [ego + G. mania, frenzy]
A peculiar broken quality of the voice sounds, like the bleating of a goat, heard about the upper level of the fluid in cases of pleurisy with effusion. SYN: capriloquism, ...
SYN: egocentric. [ego + G. trope, a turning]
Abbreviation for ethyleneglycotetraacetic acid.
Abbreviation for enterohemorrhagic Escherichia coli.
Edward L., Danish dermatologist, 1863–1937. See E.- Danlos syndrome.
A heritable disorder of connective tissue with easy bruising, joint hypermobility (loose joints), skin laxity, and weakness of tissues. There are a number of different types of ...
Johann, Austrian anatomist, †1790. See E. ganglion.
Heinrich, German physician, *1870. See E. phenomenon.
Paul, German bacteriologist, immunologist, and Nobel laureate, 1854–1915. See Ehrlichia, E. anemia, E. inner body, E. phenomenon, E. postulate, E. diazo reagent, E. theory, ...
A genus of small, often pleomorphic, coccoid to ellipsoidal, nonmotile, Gram-negative bacteria (order Rickettsiales) that occur either singly or in compact inclusions in ...
Members of the Rickettsiaceae family; obligate intracellular parasites of peripheral blood leukocytes.
An acute (abrupt onset) disease, first reported in humans in 1986, due to infection by the rickettsial agent, Ehrlichia canis. The brown dog tick, is the common vector ...
Hermann L., Swiss physician, 1849–1921. See E. corpuscles, under corpuscle, E. neuritis.
Karl von, German laryngologist, 1873–1960. See E. method.
The physiologically active substances derived from arachidonic acid, i.e., the prostaglandins, leukotrienes, and thromboxanes; synthesized via a cascade pathway. [G. eicosa-, ...
1. Relating to the power of visualization of and memory for objects previously seen which reaches its height in children aged 8 to 10. 2. A person possessing this power to a high ...
Abbreviation for enteroinvasive Escherichia coli.
An acute highly contagious viral disease with fever, runny nose, cough, red eyes, and a spreading skin rash. The eight-day measles is the ordinary measles, also known as ...
Eighth cranial nerve
The eighth cranial nerve is the vestibulocochlear nerve. The vestibulocochlear nerve is responsible for the sense of hearing and it is also pertinent to balance, to the body ...
A species of nonmotile, rod-shaped, Gram-negative, facultatively anaerobic bacteria that characteristically pits the agar under its colonies; it is part of the normal flora of ...
1. An instrument for determining the magnifying power of a microscope, or the size of a microscopic object. 2. An instrument for determining the degree of aniseikonia. [G. ...
Resembling a coil or roll. [G. eilo, to roll up, + eidos, appearance]
Gustav Heinrich Theodor, German zoologist, 1843–1898.
A family of sporozoan coccidia; important genera are Eimeria and Isospora, infections by Eimeria being by far the most common and most serious in domesticated animals. [see ...
A unit of energy equal to 1 mol quantum, hence to 6.0221367 × 1023 quanta. The value of e., in kJ, is dependent upon the wavelength. [A. E., German-born U.S. theoretical ...
An artificially prepared transuranium element, atomic no. 99, atomic wt. 252.0; it has many isotopes, all of which are radioactive (252Es has the longest known half-life, 1.29 ...
Willem, Dutch physiologist and Nobel laureate, 1860–1927. See E. equation, E. law, E. string galvanometer, E. triangle.
Victor, German physician, 1864–1932. See E. complex, E. defect, E. disease, E. syndrome, E. tetralogy.
Rarely used term for afferent. [G. eis, into, + hodos, a way]
: An abnormal and persistent fear of mirrors. Sufferers experience undue anxiety even though they realize their fear is irrational. Because their fear often is grounded in ...
To ejaculate is to release semen during an orgasm in a male. The ejaculate (used as a noun) is the semen.
* * *
1. To expel suddenly. 2. Semen expelled in ejaculation. [see ...
The process that results in propulsion of semen from the genital ducts and urethra to the exterior; caused by the rhythmic contractions of the muscles surrounding the internal ...
SYN: ejection (2). [L. ntr. pl. of ejectus, pp. of ejicio, to throw out]
1. The act of driving or throwing out by physical force from within. 2. That which is ejected. SYN: ejecta. [L. ejectio, from ejicio, to cast out]
The portion of blood that is pumped out of a filled ventricle as a result of a heartbeat. The heart does not eject all of the blood that is in the ventricle. Only about two-thirds ...
A device used for forcibly expelling (ejecting) a substance.
- saliva e. a hollow, perforated suction tube used in the evacuation of saliva or liquid debris from the oral ...
Abbreviation for excitatory junction potential.
Erick, 20th century Swedish internist. See E. maneuver.
Prefix used to denote an undiscovered or just discovered element in the periodic system before a proper and official name is assigned by authorities; e.g., e.osmium, now ...
Karl A., Swedish neurologist, *1907. See E. syndrome.
Abbreviation for electrocardiogram.
An acute, toxic form of dysentery of infants seen in Japan and due to Shigella sonnei. [Jap.]
Abbreviation for electrokymogram.
The process of working out in detail by labor and study. [L. e-laboro, pp. -atus, to labor, endeavor, fr. labor, toil, to work out]
- secondary e. the mental process occurring ...
The bloodworm of sheep; a species of nematodes causing filarial dermatosis. [Mod. L. elaea, fr. G. elaia, olive, + agnos, sheep, + phoros, to bear]
An unsaturated monobasic trans-isomer of oleic acid; found in ruminant fats. Cf.:oleic acid.
SYN: eleopathy. [G. elaion, oil, + pathos, suffering]
Any member of the snake family Elapidae.
A family of highly venomous snakes characterized by a pair of comparatively short, permanently erect deeply grooved fangs at the front of the mouth. There are over 150 species, ...
A measure of the tendency of a structure to return to its original form after removal of a deforming force. In medicine and physiology, usually a measure of the tendency of a ...
A serine proteinase hydrolyzing elastin; other e.-like enzymes have been identified ( e.g., pancreatic e. [pancreatopeptidase E] and leukocyte e. [lysosomal or neutrophil e.]) ...
1. Having the property of returning to the original shape after being stretched, compressed, bent, or otherwise distorted. 2. A rubber or plastic band used in orthodontics as ...
1. The elastic layer in the wall of an artery. 2. SYN: elastic tissue.
The quality or condition of being elastic.
- physical e. of muscle the quality of muscle that enables it to yield to passive physical stretch.
- physiologic e. of muscle the ...
A yellow elastic fibrous mucoprotein that is the major connective tissue protein of elastic structures ( e.g., large blood vessel s, tendons, ligaments, etc.); elastins precursor ...
A nonencapsulated slow-growing mass of poorly cellular, collagenous, fibrous tissue and elastic tissue; occurs usually in subscapular adipose tissue of old persons. [G. ...
Dissolution of elastic fibers. [elasto- + G. lysis, loosening, fr. luo, to loosen]
- generalized e. SYN: dermatochalasis.
A tumorlike deposit of elastic tissue.
- juvenile e. a connective tissue nevus characterized by an increase in the number and size of the elastic fibers. SEE ALSO: ...
A device for measuring the elasticity of any body or of the animal tissues.
The mucoprotein of connective tissue; e.g., elastin.
Fragmentation of elastic tissue in which the normal wavy strands appear shredded and clumped, and take a basophilic stain. [G. rhexis, rupture]
1. Degenerative change in elastic tissue. 2. Degeneration of collagen fibers, with altered staining properties resembling elastic tissue. SYN: elastoid degeneration (1), ...
The feeling or expression of excitement or gaiety; if prolonged and inappropriate, a characteristic of mania. [L. elatio, fr. ef-fero, pp. e-latus, to lift up]
A component of elastic fibers formed from a deposition of elastin between oxytalan fibers; found in the connective tissue of the dermis, particularly in association with sweat ...
Leon J.S., 20th century Belgian pathologist. See E. triangle.
Three long bones meet in the middle portion of the arm at the elbow joint. The bone of the upper arm (humerus) meets both the ulna (the inner bone of the forearm) and radius (the ...
At the tip of the elbow (the olecranon area), there is a bursa, a fluid-filled sac that functions as a gliding surface to reduce friction with motion. This bursa is known as the ...
Three long bones meet in the middle portion of the arm at the elbow joint. The bone of the upper arm (humerus) meets both the ulna (the inner bone of the forearm) and radius (the ...
Elbow, arthritis of the
Inflammation (arthritis) of the elbow joint can be due to many systemic forms of arthritis, including rheumatoid arthritis, gouty arthritis, psoriatic arthritis, ankylosing ...
Elbow, cellulitis of the
Inflammation of the skin around the elbow due to infection (cellulitis) commonly occurs as a result of abrasions or puncture wounds permitting bacteria on the surface of the skin ...
The inner portion of the elbow is a bony prominence called the medial epicondyle. Tendons from the muscles attach here and can be injured, causing medial epicondylitis. To those ...
The outer bone of the elbow is the lateral epicondyle and is a part of the humerus bone. Tendons are attach to this area which can be injured, causing inflammation or tendinitis ...
Elbow, tip of the
The bony tip of the elbow is called the olecranon. It is formed by the near end of the ulna, one of the two long bones in the forearm (the other is the radius). The triceps ...
Stands for extremely low birth weight. An ELBW baby is one born very prematurely weighing between 401 and 1000 grams (about 14 to 35 ounces) at birth. Extremely low birth weight ...
The physical, sexual, or emotional abuse of an elderly person, usually one who is disabled or frail. Like child abuse, elder abuse is a crime that all health and social services ...
In medicine, something chosen (elected). An elective procedure is one that is chosen (elected) by the patient or physician that is advantageous to the patient but is not urgent. ...
Complete lack of speech (mutism) that is believed to be volitional (willed) on the part of the patient. True elective mutism may be a reaction to a traumatic event, the ...
Surgery that is subject to choice (election). The choice may be made by the patient or doctor. For example, the time when a surgical procedure is performed may be elective. The ...
Electric, electricity. [G. elektron, amber (on which static electricity can be generated by friction)]
The diffusion of a substance through a membrane in an electric field. Cf.:electrodialysis.
Rare term for use of electricity as a means of determining whether life is present or not. [ electro- + G. bios, life, + skopeo, to examine]
A recording of the electrical activity of the heart. An electrocardiogram is a simple, non-invasive procedure. Electrodes are placed on the skin of the chest and connected in a ...
An instrument for recording the potential of the electrical currents that traverse the heart.
1. A method of recording electrical currents traversing the heart muscle. 2. The study and interpretation of electrocardiograms.
- fetal e. recording the electrocardiogram of ...
Method of electrically recording the heart sounds. [ electro- + G. kardia, heart, + phone, sound, + grapho, to write]
Cauterization by passage of high-frequency current through tissue or by a metal device that has been electrically heated.
1. An instrument for directing a high frequency current through a local area of tissue. 2. A metal cauterizing instrument heated by an electric current. SYN: electric cautery.
Flat or isoelectric encephalogram; an electroencephalogram with absence of cerebral activity over 2 μv from symmetrically placed electrode pairs 10 or more centimeters ...
Denoting chemical reactions involving electricity, and the mechanisms involved.
The coagulation (clotting) of tissue using a high-frequency electrical current applied locally with a metal instrument or needle with the aim of stopping bleeding. There is also, ...
A measurement of the electrical potentials generated in the inner ear as a result of sound stimulation. [ electro- + L. cochlea, snail shell, + G. grapho, to write]
The power of contraction of muscular tissue in response to an electrical stimulus.
Denoting a convulsive response to an electrical stimulus. See electroshock therapy.
A record of electrical activity derived directly from the cerebral cortex.
The technique of recording the electrical activity of the cerebral cortex by means of electrodes placed directly on it.
To cause death by the passage of an electric current through the body. [ electro- + execute]
Death caused by electricity. See electrocute. SYN: electrothanasia.
Recording of electric currents or changes in electric potential from the urinary bladder.
1. Device to record one of the two extremities of an electric circuit; one of the two poles of an electric battery or of the end of the conductors connected thereto. 2. An ...
Pertaining to electric properties of the skin, usually referring to altered resistance. [ electro- + G. derma, skin]
: Use of an electric current to destroy cancerous tissue and control bleeding.
* * *
Destruction of lesions or sealing off of blood vessel s (usually of the skin, but also of ...
1. The use of electronic devices for diagnostic purposes. 2. By convention, the studies performed in the EMG laboratory, i.e., nerve conduction studies and needle electrode ...
In an electric field, the removal of ions from larger molecules and particles. Cf.:electro- osmosis.
A study of electrical current within the brain. Electrodes are attached to the scalp. Wires attach these electrodes to a machine which records the electrical impulses. The results ...
A system for recording the electric potentials of the brain derived from electrodes attached to the scalp. [ electro- + G. encephalon, brain, + grapho, to write]
The process of separating macromolecules or small molecules via electrophoresis in a pH gradient.
An electrogastrogram is a study in which the electrical current generated by the muscle of the stomach is sensed and recorded. Thus, it is analogous to an electrocardiogram of ...
An instrument used in electrogastrography. [ electro- + G. gaster, stomach, + grapho, to write]
The recording of the electrical phenomena associated with gastric secretion and motility.
1. Any record on paper or film made by an electrical event. 2. In electrophysiology, a recording taken directly from the surface by unipolar or bipolar leads.
- His bundle e. ...
Arrest of hemorrhage by means of an electrocautery. [ electro- + G. haima, blood, + stasis, halt]
Instrument that records uterine electrical activity. [ electro- + G. hystera, womb, + grapho, to write]
An immunochemical method that combines electrophoretic separation with immunodiffusion by incorporating antibody into the support medium.
An obsolete technique for making a graphic record of the heart's movements produced by the electrokymograph.
An obsolete apparatus for recording, from changes in the x-ray silhouette, the movements of the heart and great vessels; consists of a fluoroscope, x-ray tube, and a ...
: A battery-operated instrument that makes a humming sound to help laryngectomies talk.
Permanent removal of body hair, including the hair root, with an electronic device. While it is billed as a permanent process, many people find that hair does grow back (albeit ...
An electrolyte is a substance that will dissociate into ions in solution and acquire the capacity to conduct electricity. The electrolytes include sodium, potassium, chloride, ...
To decompose chemically by means of an electric current.
An obsolete apparatus for the treatment of strictures, fibromas, etc., by electrolysis.
A bar of soft iron rendered magnetic by an electric current encircling it.
Electrical stimulation of the conus medullaris to empty the urinary bladder of paraplegics. [ electro- + L. micturio, to desire to make water]
A mutant form of a protein, phenotypically distinguished by its electrophoretic mobility. [ electro- + G. morphe, form, shape]
The motility of the auditory outer hair cells in response to electrical stimulation.
A graphic representation of the electric currents associated with muscular action.
An instrument for recording electrical currents generated in an active muscle.
1. The recording of electrical activity generated in muscle for diagnostic purposes; both surface and needle recording electrodes can be used, although characteristically the ...
One of the negatively charged subatomic particles that orbit the positive nucleus, in one of several energy levels called shells; in mass they are estimated to be 1/1836.15 of a ...
Electron microscope (EM)
A microscope in which an electron beam replaces light to form the image. EM has its pluses (greater magnification and resolution than optical microscopes) and minuses (you are ...
Electron microscopy (EM)
Microscopy in which an electron beam replaces light to form the image. EM has its pluses (greater magnification and resolution than optical microscopes) and minuses (you are not ...
The energy imparted to an electron by a potential of 1 V; equal to 1.60218 × 10−12 erg in the CGS system, or 1.60218 × 10−19 J in the SI system.
Production of insensibility to pain by the use of electrical current.
1. Relating to or charged with negative electricity. 2. Referring to an element whose uncharged atoms have a tendency to ionize by adding electrons, thus becoming anions ( e.g., ...
1. Pertaining to electrons. 2. Denoting devices or systems utilizing the flow of electrons in a vacuum, gas, or semiconductor.
A method of nystagmography based on electrooculography; skin electrodes are placed at outer canthi to register horizontal nystagmus or above and below each eye for vertical ...
Oculography in which electrodes placed on the skin adjacent to the eyes measure changes in standing potential between the front and back of the eyeball as the eyes move; a ...
An electronegative wave of potential occurring on the surface of the olfactory epithelium in response to stimulation by an odor. SYN: osmogram, Ottoson potential.
Removal of fluid, as from the eye, with an electrically activated instrument.
The densitometric or colorimetric pattern obtained from filter paper or similar porous strips on which substances have been separated by electrophoresis; may also refer to the ...
1. The electron-attracting atom or agent in an organic reaction. Cf.:nucleophil. 2. Relating to an e.. SYN: electrophilic. [ electro- + G. philos, fond]
Morbid fear of electricity. [ electro- + G. phobos, fear]
Method used in clinical and research laboratories for separating molecules according their size and electrical charge. Electrophoresis is used to separate large molecules (such as ...
Relating to electrophoresis, as an e. separation. SYN: ionophoretic.
Denoting electrical stimulation of the phrenic nerve usually at its motor point in the neck. SEE ALSO: e. respiration.
Electrophysiologic study (EPS) of the heart
A test of the electrical conduction system of the heart (the system that generates the heart beat). EPS is done by threading thin plastic tubes (catheters) into a vein where the ...
The branch of science concerned with electrical phenomena that are associated with physiologic processes. Electrical phenomena are prominent in neurons and effectors.
A technique in which a brief electric shock is applied to cells; momentary holes open briefly in the plasma membrane, allowing the entry of macromolecules ( e.g., a way of ...
1. Relating to or charged with positive electricity. 2. Referring to an element whose atoms tend to lose electrons; e.g., sodium, potassium, calcium.
Passage of an electrical current through needle electrodes piercing the tissues.