The genitals; corresponds to L. pudend-. [G. aidoia, shameful things, the genitals]
A deficiency of cellular immunity induced by infection with the human immunodeficiency virus ( HIV-1) and characterized by opportunistic diseases, including Pneumocystis ...
Abbreviation for homologous (artificial) insemination.
AIH (artificial insemination by husband)
: A procedure in which a fine catheter (tube) is inserted through the cervix (the natural opening of the uterus) into the uterus (the womb) to deposit a sperm sample from the ...
Abbreviation for angioimmunoblastic lymphadenopathy with dysproteinemia.
Abbreviation for alloisoleucine.
An abnormal and persistent fear of cats which produces an undue anxiety reaction even though sufferers realize their fear is irrational. Sufferers of ailurophobia may fear not ...
An acquired slowly progressive painful fibrous constriction that develops in the digitoplantar fold, usually of the little toe, gradually resulting in spontaneous amputation of ...
Abbreviation for 5-aminoimidazole ribose 5′-phosphate and 5-aminoimidazole ribotide.
1. A mixture of odorless gases found in the atmosphere in the following approximate percentages by volume after water vapor has been removed: oxygen, 20.95; nitrogen, 78.08; ...
A bag that fills with air, designed for frontal impact crashes, the kind of crashes which account for more than half of all passenger vehicle occupant deaths. Air bags are ...
Air travel with diabetes
A concern for patients with diabetes is flying with medications and supplies. Letters from doctors are not recommended since security has concerns that these may be easily forged. ...
A form of the sick building syndrome caused by organisms that contaminate humidifiers and the piping of air conditioner ducts. The air conditioner blows cold air containing ...
Robert B., U.S. neurologist, *1903. See Flynn-A. syndrome.
A condition resembling seasickness or other forms of motion sickness occurring in airplane or space flight as a result of erratic and continuous stimuli of the inner ear.
Pertaining to the portion of the lung distal to the conducting airways or bronchi; alveolar.
Slow or incomplete emptying of gas from all or part of a lung on expiration; implies obstruction of regional airways or emphysema.
The path air follows to get into and out of the lungs. The mouth and nose are the normal entry and exit ports. Entering air then passes through the back of the throat (pharynx), ...
Partial or complete blockage of the breathing tubes to the lungs. Obstruction of the airway can be due to different causes including foreign bodies, allergic reactions, ...
The ascomycetous (perfect, sexual, teleomorph) state of Histoplasma capsulatum. SYN: Emmonsiella capsulata.
The perfect ( teleomorph) state of the fungus Blastomyces dermatitidis; the (+) and (-) mating types cause disease with equal frequency. This sexual state is placed in the ...
An indole alkaloid from the roots of Rauwolfia serpentina, related to reserpine, serpentine, and yohimbine; has been used for treatment of hypertension and as a tranquilizer ...
A volatile oil distilled from the fruit of Carum copticum, one of the sources of thymol; a carminative, aromatic, and expectorant. SYN: ptychotis oil.
In general usage, this would be read to mean "also known as." For example, President William Jefferson (aka "Bill") Clinton. However, in medical parlance, AKA means "above the ...
A cell without a nucleus (karyon), such as the erythrocyte. SYN: acaryote, akaryote. [G. a- priv. + karyon, kernel, + kytos, a hollow (cell)]
SYN: akaryocyte. [G. a- priv. + karyon, kernel]
A syndrome characterized by an inability to remain in a sitting posture, with motor restlessness and a feeling of muscular quivering; may appear as a side effect of ...
A. Olof, Swedish radiologist, 1885–1958. See Åkerlund deformity.
Impaired body movement; without movement (or without much movement). Akinesia is a term used in neurology to denote the absence (or poverty) of movement. The word " akinetic" ...
Inability to perceive movement or position. Absence of the sense of perception of movement or of the muscular sense. [G. a- priv. + kinesis, motion, + aisthesis, sensation]
Without movement (or without much movement). A term used in neurology to denote the absence (or poverty) of movement. The word "akinetic" comes from the prefix "a-" meaning ...
A state in which a person is unspeaking (mute) and unmoving (akinetic). A textbook on clinical neurology observes that a person with akinetic mutism has "sleep-waking cycles ...
A coccidiostat used in veterinary practice.
Abbreviation for Adair-Koshland-Némethy- Filmer model.
Abbreviation for δ-aminolevulinic acid.
Symbol for alanine or its mono- or diradical.
1. [TA] SYN: wing. 2. Pronounced, longitudinal cuticular ridges in nematodes, usually found in larval stages (Ascaris lumbricoides), although occasionally present in adult worm ...
Deficiency of tear secretion. [G. a- priv. + L. lacrima, tear]
Daniel, French physician, *1925. See A. syndrome.
Also known as arteriohepatic dysplasia, this is a genetic disorder characterized by jaundice in the newborn period, liver disease with cholestasis, peripheral pulmonic stenosis ...
Théophile, French neurologist, 1890–1980. See Foix-A. myelitis, Foix-A. syndrome.
Mutism; inability to speak. See aphonia. [G. a- priv. + lalia, talking]
An amino acid, one of the 20 amino acids that serve as the building blocks in protein. Alanine is not an "essential" amino acid. (It is not essential to the diet, but can be made ...
An enzyme transferring amino groups from l-alanine to 2-ketoglutarate, or the reverse (from l-glutamate to pyruvate); there is a d-alanine transaminase that effects the same ...
Alanine aminotransferase (ALT)
An enzyme that is normally present in liver and heart cells. ALT is released into blood when the liver or heart is damaged. The blood ALT levels are thus elevated with liver ...
An enzyme, requiring pyridoxal phosphate as coenzyme, that catalyzes the reversible racemization of l-alanine to d-alanine; found in various microorganisms, where it plays a ...
An enzyme that reversibly catalyzes the transfer of an amino group of l-alanine to glyoxylate, thus producing pyruvate and glycine. An inherited disorder that results in an ...
An enzyme that accomplishes the reversible transfer of the amino groups from l-alanine to oxomalonate, an action similar to that of alanine aminotransferase, producing pyruvate ...
An antibiotic substance produced by Streptomyces alanosinicus; possesses antineoplastic and antiviral activity.
Edward, British surgeon, 1747–1823. See A. amputation.
A yellowish liquid obtained by distillation from the root of Inula helenium or elecampane; used internally as an irritating tonic and externally as a mild rubefacient. SYN: ...
The acyl radical of alanine.
1. Relating to a wing; winged. 2. SYN: axillary. 3. Relating to the wings (ala) of such structures as the nose, sphenoid, sacrum, etc.
Acronym for a philosophy of use of radiation based on using dosages as low as reasonably achievable to attain the desired diagnostic, therapeutic, or other goal.
A biochemical whose synthesis increases under certain stress conditions (for example, a nutritional deficiency affecting certain enzymes). [alarm + -mone]
A mild form of smallpox caused by a less virulent strain of the virus. SYN: Cuban itch, Kaffir pox, milkpox, pseudosmallpox, pseudovariola, variola minor, West Indian ...
Prefix from the Latin root for the color white, "albus." As in albino and albinism. The term " albino" was first applied by the Portuguese to "white" people they encountered in ...
SYN: white matter. [fem. of L. albus, white]
Albarran y Dominguez
Joaquin, Cuban urologist, 1860–1912. See Albarran glands, under gland, Albarran test, A. tubules, under tubule.
A white area of the retina due to edema or infarction. [L. whiteness]
Heinrich E., German radiologist, 1865–1921. See Albers-Schönberg disease.
Eduard, Austrian surgeon, 1841–1900. See A. suture.
Henry, U.S. physician, 1878–1930. See A. stain.
1. SYN: white. 2. SYN: corpus a.. [L.]
The passing of pale or white urine of low specific gravity, as in chyluria. SYN: albinuria. [L. albidus, whitish, + G. ouron, urine]
Giuseppe, Italian physiologist, 1827–1911. See A. nodules, under nodule.
Partial or total lack of the pigment melanin in the skin, hair and iris. The word albino is Portuguese and comes from the Latin albus for white.
* * *
A group of inherited ...
An individual with albinism. [Pg., little white one, fr. albo, white, fr. L. albus + -ino, dim. suffix]
Bernhard S., German anatomist and surgeon, 1697–1770. See A. muscle.
Relating to both the white and the gray matter of the brain or spinal cord. [L. albus, white, + cinereus, ashen, fr. cinis (ciner-), ashes]
Karl M.P., German anatomist, 1851–1894. See A. bone.
Fuller, U.S. physician, 1900–1969. See A. disease, A. syndrome, A. hereditary osteodystrophy, Forbes-A. syndrome, McCune-A. syndrome.
1. A genetic disorder of bones, skin pigmentation and hormonal problems with premature sexual development. Also called McCune-Albright syndrome and polyostotic fibrous ...
Tough white fibrous tissue. The tunica albuginea of the testis, for example, is the layer of dense whitish inelastic tissue that surrounds the testis.
* * *
A white fibrous ...
Incision into any tunica albuginea. [ albuginea + G. tome, cutting]
1. Resembling boiled white of egg. 2. Relating to any tunica albuginea. [L. albugineus, fr. albugo, white spot]
The white of an egg, the part of the egg from which meringues are made. Albus in Latin is white. Not to be confused with "albumin" which is the main protein in human blood and the ...
The main protein in human blood and the key to the regulation of the osmotic pressure of blood. Chemically, albumin is soluble in water, precipitated by acid, and coagulated by ...
The product of the reaction between native albumin and dilute acids or dilute bases, thereby resulting in acid albuminates or alkali albuminates; both types are characterized by ...
The presence of an abnormally large quantity of albuminates in the urine when voided. [ albuminate + G. ouron, urine]
1. Resembling albumin. 2. Any protein. 3. A simple type of protein, insoluble in neutral solvents, present in horny and cartilaginous tissues and in the lens of the eye; e.g., ...
Proteolysis; often, specifically the proteolysis of albumins. [albumin + G. lysis, dissolution]
Albuminous expectoration. [albumin + G. ptysis, a spitting]
Relating to, containing, or consisting of albumin.
More than the normal amount of albumin in the urine. Albumin is the main protein in human blood and it is the key to the regulation of the osmotic pressure of blood. Some ...
Relating to or characterized by albuminuria.
A sympathomimetic bronchodilator with relatively selective effects on β2 receptors, by inhalation. SYN: salbutamol.
A genus of Gram-negative, rod-shaped, nonfermenting bacteria (family Achromobacteraceae) which are either motile and peritrichous or nonmotile. They are strictly aerobic; some ...
Excretion of homogentisic acid ( alkapton) in the urine due to congenital lack of the enzyme homogentisate 1,2-dioxygenase, which mediates an essential step in the catabolism ...
A complex phthalocyanin dye used as a stain to distinguish sulfomucins from sialomucins and uronic acid mucins, to demonstrate sulfated polysaccharides, and to detect ...
A potent corticosteroid used as the 17,21-dipropionate in topical therapy for psoriasis and other deep-seated dermatoses.
Benjamin, Irish anatomist, 1801–?. See A. canal.
A hydrogel, with alcohol instead of water as the dispersion medium.
An organic chemical in which one or more hydroxyl (OH) groups are attached to carbon (C) atoms in place of hydrogen (H) atoms. Common alcohols include ethyl alcohol or ethanol ...
Use of alcoholic beverages to excess, either on individual occasions (“binge drinking”) or as a regular practice. For some individuals—children or pregnant women, for ...
A group of compounds that contain both the carboxyl and hydroxy radicals; e.g., glycolic acid.
An oxidoreductase that reversibly converts an alcohol to an aldehyde (or ketone) with NAD+ as the H acceptor. For example, ethanol + NAD+ ⇄ acetaldehyde + NADH. SEE ALSO: ...
A condition in which a toxic amount of alcohol (ethanol, ethyl alcohol) has been drunk, usually in a short period of time. The toxicity is related to the blood level of the ...
The consumption of alcohol during pregnancy carries the danger of damaging the fetus.
1. A tincture or other preparation containing alcohol. 2. A chemical compound in which the hydrogen in the OH group of an alcohol is replaced by an alkali metal; e.g., sodium ...
1. Relating to, containing, or produced by alcohol. 2. One who suffers from alcoholism. 3. One who abuses or is dependent upon alcohol.
A free, self-help organization founded to assist people addicted to alcohol in breaking old behavior patterns and gaining support for living a sober lifestyle.
Physical dependence on alcohol to the extent that stopping alcohol use will bring on withdrawal symptoms. In popular and therapeutic parlance, the term may also be used to refer ...
Morbid fear of alcohol, or of becoming an alcoholic. [alcohol + G. phobos, fear]
Splitting of a chemical bond with the addition of the elements of alcohol at the point of splitting. [alcohol + G. lysis, dissolution]
A skeletal muscle relaxant active as a nondepolarizing neuromuscular blocking agent, resembling curare.
Abbreviation for adrenoleukodystrophy.
A metabolite of spironolactone that contains double bonds between C-4 and C-5 and between C-6 and C-7; formed upon removal of the 7α-acetylthiol side chain from spironolactone ...
One of a group of sugar acids characterized by the formula HOOC—(CHOH)n—COOH; e.g., saccharic acid.
An oxidation product of kerosene; used for denaturing ethyl alcohol.
A compound containing the radical —CH=O, reducible to an alcohol (CH2OH), oxidizable to a carboxylic acid (COOH); e.g., acetaldehyde.
- activated glycol a. ...
An oxidoreductase converting an aldehyde and CoA to acyl-CoA with NAD+ as H acceptor.
An oxidoreductase reversibly converting aldehydes to acids with NADP+ as H acceptor.
Albert von. See A. anomaly, A. bodies, under body.
The polyalcohol derived by reduction of an aldose; e.g., sorbitol. SEE ALSO: aldose reductase.
Condensation products of an aldose and a uronic acid; such groupings occur among the components of various mucopolysaccharides, notably hyaluronic acid.
A 6-carbon sugar characterized by the (potential) presence of an aldehyde group in the molecule; e.g., glucose, galactose.
See a. condensation.
1. Generic term for aldehyde-lyase. 2. Name sometimes applied to fructose-bisphosphate a..
Monosaccharide derivatives in which the aldehyde group has been oxidized to a carboxyl group. They may form lactones ( e.g., galactonic acid). SYN: glyconic acids.
A monosaccharide with five carbon atoms, of which one is a (potential) aldehyde group; e.g., ribose.
A monosaccharide potentially containing the characteristic group of the aldehydes, —CHO; a polyhydroxyaldehyde.
- a. mutarotase SYN: a. 1-epimerase.
- a. reductase polyol ...
An enzyme catalyzing the reversible interconversion of α- and β-aldoses ( e.g., α- and β-d-glucose); also acts on l-arabinose, d-xylose, d-galactose, maltose, and lactose. ...
Aldose reductase inhibitor
A class of drugs used to prevent eye and nerve damage in diabetes. Aldose reductase is an enzyme that is normally present in the eye and in many other parts of the body. It helps ...
A glucoside in which the sugar moiety is an aldose.
A hormone made by the outer portion (cortex) of the adrenal gland that regulates the balance of salt and water in the body. Pronounced AL·do·ste·rone. Aldosterone is secreted ...
A disorder caused by excessive secretion of aldosterone. SYN: hyperaldosteronism.
- idiopathic a. SYN: primary a..
- primary a. an adrenocortical disorder caused by excessive ...
Formation of the hormone, aldosterone. [ aldosterone + G. genesis, production]
A four-carbon aldose; e.g., threose, erythrose.
A three-carbon aldose; e.g., d- or l-glyceraldehyde.
A compound derived by the reaction of an aldose with hydroxylamine, thus containing the a. group –HC=NOH.
Robert Anderson, U.S. pediatrician, *1917. See A. syndrome, Wiskott-A. syndrome.
A volatile chlorinated hydrocarbon used as an insecticide; if absorbed through the skin, it causes toxic symptoms consisting of irritability followed by depression.
Without yolk; denoting ova with little or no deutoplasm. [G. a- priv. + lekithos, yolk]
An insect, commonly found in Mexico and South America, whose bites, like those of the bedbug, may suppurate.
A type of still, an apparatus used in the process of distillation. Alembics were employed in chemistry and biomedical laboratories as well as in distilling cognac. By extension, ...
Denoting a nerve fiber lacking a neurolemma. [G. a- priv. + lemma, husk]
1. Literally, a lack of leukocytes in the blood. The term is generally used to indicate varieties of leukemic disease in which the white blood cell count in circulating blood is ...
1. Absence or extremely decreased number of leukocytes in the circulating blood; sometimes also termed aleukemic myelosis. 2. Obsolete name for thrombocytopenia. [G. a- priv. ...
Manifesting absence or extremely reduced numbers of leukocytes in blood or lesions.
Absence or great reduction (relative or absolute) of the number of white blood cells in the circulating blood ( i.e., an advanced degree of leukopenia), or the lack of leukocytes ...
A conidium developed from the blown-out end of conidiogenous cells or hyphal branches, and released by rupture below the base of attachment. SYN: aleuriospore. [G. aleuron, ...
Protein granules in the endosperm of seeds, supposed to contain the vitamins of edible seeds and grains. [G. flour]
Protein from the aleuron layer ( endosperm) of cereal grains; used to make bread for diabetics.
Gustav, Austrian otolaryngologist, 1873–1932. See A. hearing impairment.
W. Stewart, 20th century New Zealand pathologist. See A. disease.
A slowly progressive and ultimately fatal brain disorder that most commonly occurs in children. The infantile form of the disease is characterized by megalencephaly (an ...
A loss of the ability to read or understand the written word, due to brain damage that disconnects these functions. From the Greek prefix “a- “ meaning “without” + ...
Obsolete term for the bactericidal substances of cell-free serum, the activity of which is destroyed by heating at 56°C; applied by Bordet to the heat-labile substance normally ...
Difficulty in recognizing and describing one's emotions, defining them in terms of somatic sensations or behavioral reactions. [G. a- priv. + lexis, word, + -thymia, feelings, ...
A derivative of vitamin D used in the treatment of hypoparathyroidism, vitamin D-dependent rickets, and rickets associated with malabsorption syndromes.
A very potent, short-acting narcotic agonist analgesic used as an anesthetic or as an adjunct in the maintenance of general anesthesia.
Abbreviation for antilymphocyte globulin.
A division of eukaryotic, photosynthetic, nonflowering organisms that includes many seaweeds. [pl. of L. alga, seaweed]
- blue-green a. former name for the blue-green bacteria, ...
Resembling or pertaining to algae.
Ground meal of the fruit of Ceratonia siliqua; used as an adsorbent-demulcent in the treatment of diarrhea. SYN: carob flour, locust gum.
An agent that has a cooling action. [L. algeo, to be cold, + facio, pr. pl. -iens, to make]
SYN: algesthesia. [G. algesis, a sense of pain]
1. Painful; related to or causing pain. 2. Relating to hypersensitivity to pain. SYN: algetic.
An instrument for recording the time required for the perception of a painful stimulus. [G. algesis, sense of pain, + chronos, time, + metron, measure]
Pain-producing. SYN: algogenic. [G. algesis, sense of pain, + -gen, production]
An instrument for measuring the degree of sensitivity to a painful stimulus. SYN: algesimeter, algometer. [G. algesis, sense of pain, + metron, measure]
1. The appreciation of pain. 2. Hypersensitivity to pain. SYN: algesia, algesthesis. [G. algos, pain, + aisthesis, sensation]
An agent active against algae. [ algae, + L. caedo, to kill]
Chilly, cold. [L. algidus, cold]
A carbohydrate product from a seaweed, Macrocystis pyrifera; used as a gel in pharmaceutical preparations. SYN: sodium alginate.
An irreversible hydrocolloid consisting of salts of alginic acid, a colloidal acid polysaccharide obtained from seaweed and composed of mannuronic acid residues; used in ...
Causing painful muscular contractions. SYN: algiomuscular. [ algio- + L. motor, mover]
A painful local disturbance of growth, particularly due to focal aseptic necrosis of bone and cartilage. [ algo- + G. dys-, bad, + trophe, nourishment]
Obsolete term for algophilia. [ algo- + G. lagneia, lust]
1. The study of pain. [G. algos,pain, + -logy] 2. The scientific study of algae.
SYN: algesiometer. [ algo- + G. metron, measure]
Form of sexual perversion in which the infliction or the experiencing of pain increases the pleasure of the sexual act or causes sexual pleasure independent of the act; ...
An abnormal and persistent fear of pain. The fear is excessive, beyond that which is expected under the circumstances, producing an anxiety reaction. From the Greek "algos" ...
A systematic process consisting of an ordered sequence of steps, each step depending on the outcome of the previous one. In clinical medicine, a step-by-step protocol for ...
SYN: cryoscopy. [L. algor, cold, + G. skopeo, to view]
Spasm produced by pain. [G. algos, pain, + spasmos, convulsion]
Relating to changes in the lumen of the blood vessel s occurring under the influence of pain. SYN: algiovascular. [G. algos, pain]
SYN: nutritive. [L. alibilis, nutritive, fr. alo, to nourish]
Alien hand syndrome
The feeling that one's hand is possessed by a force outside of ones control. The syndrome typically arises after trauma to the brain, after brain surgery or after a stroke or an ...
A condition characterized by lack of meaningful relationships with others, sometimes resulting in depersonalization and estrangement from others. [L. alieno, pp. -atus, to make ...
Congenital absence of the spleen. [G. a- priv. + L. lien, spleen]
The term "alienist" was heading for obsolescence until it was returned to a position of some prominence by the 1994 book "The Alienist" by the historian/novelist Caleb Carr. The ...
Wing-shaped. [L. ala, + forma, shape]
1. The longitudinal position of a bone or limb. 2. The act of bringing into line. 3. In dentistry, the arrangement of the teeth in relation to the supporting structures and the ...
1. SYN: nourishment. 2. In sensorimotor theory, that which is assimilated to a schema; analogous to a stimulus. [L. alo, to nourish]
Relating to food or nutrition. [L. alimentarius, fr. alimentum, nourishment]
Providing nourishment. SEE ALSO: feeding.
- forced a. SYN: forced feeding.
- parenteral a. providing nourishment intravenously.
- rectal a. nourishment provided by retention ...
Relating to the wings of the nose (alae nasi), or flaring portions of the nostrils. [L. ala, + nasus, nose]
Injection of alcohol for hardening and preserving pathologic and histologic specimens.
Denoting the acyclic carbon compounds, most of which belong to the fatty acid series. [G. aleiphar (aleiphat-), fat, oil]
- a. acids the acids of nonaromatic hydrocarbons ( e.g., ...
Characterized by absence of lipoids. [G. a- priv. + lipoides, resembling fat]
Having no effect upon fat metabolism, or upon the movement of fat to the liver. [G. a- priv. + lipos, fat, + tropos, a turning]
In chemistry and immunology, pertaining to a portion of the whole; loosely, any one of two or more samples of something, of the same volume or weight. [L. a few, several]
Relating to the greater wing of the sphenoid bone. [L. ala, + sphen, wedge]
1,2-Dihydroxyanthraquinone; a red dye that occurs in the root of madder (Rubia tinctorum and other Rubiaceae) in glucose combination (ruberythric acid) as orange needles, ...
The radical of an alkene in which the double bond indicated by “en(e)” is between carbons 1 and 2 (carbon 1 being the radical or “yl” carbon), i.e., R—CH=CH—; ...
A phosphatidate in which at least one of the radicals attached to the glycerol is an alk-1-enyl rather than the usual acyl radical ( i.e., is derived from an aldehyde rather ...
An acyclic hydrocarbon ( alkane) containing two double bonds.
A decrease in H-ion concentration of the blood or a rise in pH. [alkali + G. haima, blood]
1. A strongly basic substance yielding hydroxide ions (OH− in solution); e.g., sodium hydroxide, potassium hydroxide. 2. SYN: base (3). 3. SYN: a. metal. [Ar., al, the, + ...
Relating to or having the reaction of an alkali.
An enzyme made in the liver, bone, and the placenta and normally present in high concentrations in growing bone and in bile. Alkaline phosphatase is released into the blood ...
The passage of alkaline urine. SYN: alkaluria. [ alkaline + G. ouron, urine]
Therapeutic use of alkali for local or systemic effect.
The process of rendering alkaline. SYN: alkalinization.
An agent that neutralizes acids or renders a solution alkaline.
Originally, any one of hundreds of plant and fungal products distinguished by alkaline (basic) reactions, but now restricted to heterocyclic nitrogen-containing and often complex ...
A medication in a class of anticancer drugs that inhibit cancer cell growth by stopping cell division (mitosis). The vinca alkaloids are also called antimitotic or ...
A dangerous decrease in the normal acidity of the blood. There is too much base in the blood and body. This is a distinctly abnormal condition. It results from the accumulation ...
The general term for a saturated acyclic hydrocarbon; e.g., propane, butane.
The root of an herb, Alkanna, or Anchusa tinctoria (family Boraginaceae), that yields red dyes alkannan and alkannin; used as a coloring agent; also used, combined with tannin, ...
A minor red dye component derived from alkanet.
The major red dye derived from alkanet; used as an astringent, and in cosmetics and foods; can be used as an indicator : red at pH 6.8, changing to purple at pH 8.8 and blue ...
SYN: homogentisic acid. [Boedeker's coinage fr. alkali + L + G. kapto, to suck up greedily]
An acyclic hydrocarbon containing three double bonds; e.g., 2,4,6-octatriene, CH3—CH=CH—CH=CH—CH=CH—CH3.