Proceeding in a direction toward the spinal cord; said of different nerve impulses. [ myelo- + L. peto, to seek]
1. Wasting or atrophy of the spinal cord as in tabes dorsalis. 2. Replacement of hemopoietic tissue in the bone marrow by abnormal tissue, usually fibrous tissue or malignant ...
Any of the leukocytic series of cells in the bone marrow, especially young forms. [ myelo- + G. plastos, formed]
SYN: spinal paralysis. [ myelo- + G. plege, a stroke]
Formation of the tissue elements of bone marrow, or any of the types of blood cells derived from bone marrow; or both processes. [ myelo- + G. poiesis, a making]
Pertaining to or characterized by unusual proliferation of myelopoietic tissue.
Malignant diseases of certain bone marrow cells including those that give rise to the red blood cells, the granulocytes (types of white blood cells), and the platelets (crucial to ...
Inflammation of the spinal cord and nerve roots. [ myelo- + L. radicula, root, + G. -itis, inflammation]
Congenital maldevelopment of the spinal cord and spinal nerve roots. [ myelo- + L. radicula, root, + dysplasia]
Disease involving the spinal cord and nerve roots. SYN: radiculomyelopathy. [ myelo- + L. radicula, root, + G. pathos, disease]
SYN: hematomyelia. [ myelo- + G. rhegnymi, to burst forth]
Suture of a wound of the spinal cord. [ myelo- + G. rhaphe, a seam]
Cleft spinal cord resulting from failure of the neural folds to close normally in the formation of the neural tube; inevitably spina bifida is a sequel. [ myelo- + G. schisis, a ...
SYN: myelofibrosis. [ myelo- + G. sklerosis, induration]
1. A condition characterized by abnormal proliferation of tissue or cellular elements of bone marrow, e.g., multiple myeloma, myelocytic leukemia, myelofibrosis. 2. A ...
The fibrocellular meshwork in the spinal cord of the embryo, from which the neuroglia is developed. [ myelo- + G. spongos, sponge]
An instrument used in making serial sections of the spinal cord or for incising the spinal cord. [ myelo- + G. tomos, cutting]
Tomography of the spinal subarachnoid space opacified with contrast medium; an obsolete procedure.
Incision of the spinal cord. [ myelo- + G. tome, incision]
- Bischof m. longitudinal incision of the spinal cord through the lateral column for treatment of spasticity of the ...
1. Inhibitory, depressant, or destructive to one or more of the components of bone marrow. 2. Pertaining to, derived from, or manifesting the features of diseased bone marrow.
The muscular coat, or muscularis, of the intestine. [G. mys, muscle, + enteron, intestine]
SYN: kinesthetic sense. [G. mys, muscle, + aisthesis, sensation]
Any infection due to invasion of tissues or cavities of the body by larvae of dipterous insects. [G. myia, a fly]
- accidental m. gastrointestinal m. from ingestion of ...
SYN: mycolic acids.
The dried beetle, M. phalerata; a vesicant similar to cantharis. [G. a cockroach found in mills and bakehouses, fr. myle, mill]
Relating to the molar teeth, or posterior portion of the lower jaw, and to the hyoid bone; denoting various structures. See nerve to m., muscle, region, sulcus. [G. myle, a ...
Muscle. [G. mys, muscle]
A prefix denoting a relationship to muscle. Myo- enters into many words and terms in medicine including cardiomyopathy, dermatomyositis, electromyography, leiomyoma, ...
1,2,3,5/4,6-Inositol; a constituent of various phosphatidylinositols and the most widely distributed form of inositol found in microorganisms, higher plants, and animals. In ...
Albumin in muscle tissue, possibly the same as serum albumin.
Relating to the structural arrangement of muscle or of fibers in general. [myo- + G. architektonikos, relating to construction]
A primitive muscle cell with the potentiality of developing into a muscle fiber. SYN: sarcoblast, sarcogenic cell. [myo- + G. blastos, germ]
Relating to a myoblast or to the mode of formation of muscle cells.
A tumor of immature muscle cells. [myo- + G. blastos, germ, + -oma, tumor]
- granular cell m. obsolete term for granular cell tumor.
Sluggish reaction of muscle to stimulation. [myo- + G. bradys, slow]
Literally a bridging of heart muscle over one of the major arteries to the heart (usually the left anterior descending artery). The heart has formed in this abnormal design from ...
Myocardial infarction, acute
An acute myocardial infarction (AMI) is a heart attack. The term "myocardial infarction" focuses on the heart muscle (the myocardium) and the changes that occur in it due to ...
An instrument composed of a tambour with recording lever attachment, by means of which a tracing is made of the movements of the heart muscle. [myo- + G. kardia, heart, + ...
SYN: cardiomyopathy. [ myocardium + G. pathos, suffering]
- alcoholic m. SYN: alcoholic cardiomyopathy.
- chagasic m. (cha′ga-sik) heart muscle disease due to Chagas ...
Inflammation of the muscular walls of the heart.
- acute isolated m. an acute interstitial m. of unknown cause, the endocardium and pericardium being unaffected. SYN: Fiedler ...
The middle layer of the heart, consisting of cardiac muscle. [myo- + G. kardia, heart]
- hibernating m. ventricular dysfunction following months or years of ischemia that is ...
1. Protrusion of muscle substance through a rent in its sheath. [myo- + G. kele, hernia] 2. The small cavity that appears in somites. SYN: somite cavity. [myo- + G. koilia, a ...
Obsolete term for celiomyalgia. [myo- + G. koilia, the belly, + algos, pain]
Inflammation of the abdominal muscles. [myo- + G. koilia, belly, + -itis, inflammation]
Inflammation of muscle and cellular tissue. [myo- + Mod. L. cellularis, cellular (tissue), + G. -itis, inflammation]
Waxy degeneration of the muscles. SYN: myokerosis. [myo- + G. keros, wax]
Rarely used term for cytochrome found in muscle tissue.
An instrument for timing a muscular impulse, i.e., the interval between the application of the stimulus and the muscular movement in response. [myo- + G. chronos, time, + skopeo, ...
Any disorder characterized by myoclonus. [myo- + G. klonos, a tumult]
- fibrillary m. the twitching of a limited part or group of fibers of a muscle.
A rapid, involuntary muscle contraction, particularly near the eye. Myoclonic tics resemble, and may be mistaken for, tics. Like tics, they tend to occur more often when the ...
A condition of abnormal contraction of muscles or portions of muscles.
* * *
One or a series of shock-like contractions of a group of muscles, of variable regularity, synchrony, ...
Inflammation of the muscular tissue of the vagina. [myo- + G. kolpos, bosom (vagina), + -itis, inflammation]
The connective tissue septum separating adjacent myotomes. SYN: myoseptum. [myo- + G. komma, a coin or the stamp of a coin]
A creaking sound sometimes heard on auscultation of a contracting muscle. [myo- + G. krizo, to squeak]
A muscle cell. Myo- is a prefix that indicates a relationship to muscle while -cyte is a combining form that indicates a cell, so a myocyte is literally a muscle cell. For ...
Dissolution of muscle fiber. [myo- + G. kytos, cell, + lysis, a loosening]
- m. of heart local loss of myocardial syncytium as a result of a metabolic imbalance, insufficient ...
A benign neoplasm derived from muscle.
Fatty degeneration of muscle. [myo- + G. demos, tallow]
SYN: musculocutaneous. [myo- + G. derma, skin]
Separation of muscle. [myo- + G. diastasis, separation]
Muscular strength. [myo- + G. dynamis, power]
An instrument for determining muscular strength. [myo- + G. dynamis, force, + metron, measure]
SYN: myalgia. [myo- + G. odyne, pain]
A condition of slow relaxation, interrupted by a succession of slight contractions, following electrical stimulation of a muscle. [myo- + G. dys-, difficult, + tonos, tone, ...
A localized contraction of a degenerating muscle, occurring at the point of a sharp blow, independent of the nerve supply. SYN: idiomuscular contraction, mounding, myoidema. ...
Pertaining to closely associated smooth muscle fibers and elastic connective tissue.
Relating to the electrical properties of muscle.
Inflammation of the muscular wall and lining membrane of the heart. [myo- + G. endon, within, + kardia, heart, + -itis, inflammation]
A benign tumor of myoepithelial cells. [myo- + epithelium, + G. -oma, tumor]
Spindle-shaped, contractile, smooth musclelike cells of epithelial origin that are arranged longitudinally or obliquely around sweat glands and the secretory alveoli of the ...
Of or relating to the fascia surrounding and separating muscle tissue.
One of the fine longitudinal fibrils occurring in a skeletal or cardiac muscle fiber comprising many regularly overlapped ultramicroscopic thick and thin myofilaments. SYN: ...
A cell thought to be responsible for contracture of wounds; such cells have some characteristics of smooth muscle, such as contractile properties and fibrils, and are also ...
A benign neoplasm that consists chiefly of fibrous connective tissue, with variable numbers of muscle cells forming portions of the neoplasm.
Solitary or multiple tumors of muscle and fibrous tissue, or tumors composed by myofibroblasts. [myo- + L. fibra, fiber, + G. suffix, -oma, tumor, + suffix -osis, condition]
Chronic myositis with diffuse hyperplasia of the interstitial connective tissue pressing upon and causing atrophy of the muscular tissue.
- m. cordis m. of the heart walls. ...
The ultramicroscopic threads of filamentous proteins making up myofibrils in striated muscle. Thick ones contain myosin and thin ones actin; thick and thin m. also occur in ...
1. Relating to function of muscles. 2. In dentistry, relating to the role of muscle function in the etiology or correction of orthodontic problems.
Proteins extracted from skeletal muscle with cold water, largely the enzymes promoting glycolysis; from the residue, alkaline 0.6 mol L−1 KCl extracts actin and myosin as ...
Embryonic formation of muscle cells or fibers. [myo- + G. genesis, origin]
1. Originating in or starting from muscle. 2. Relating to the origin of muscle cells or fibers. SYN: myogenous.
The oxygen-carrying and storage protein of muscle, resembling blood hemoglobin in function but containing only one subunit and one heme as part of the molecule (rather than the ...
Excretion of myoglobin in the urine; results from muscle degeneration, which releases myoglobin into the blood; occurs in certain types of trauma ( crush syndrome), advanced or ...
An unequal conjoined twin in which the rudimentary head of the parasite is attached to the lower jaw of the autosite by muscle and skin only. See conjoined twins, under twin. ...
The tracing made by a myograph. SYN: muscle curve. [myo- + G. gramma, a drawing]
A recording instrument by which tracings are made of muscular contractions. [myo- + G. grapho, to write]
- palate m. SYN: palatograph.
Relating to a myogram, or the record of a myograph.
1. The recording of muscular movements by the myograph. 2. A description of or treatise on the muscles. SYN: descriptive myology.
1. Resembling muscle. 2. One of the fine, contractile, threadlike protoplasmic elements found in certain epithelial cells in lower animals. 3. A contractile part of retinal ...
SYN: myoedema. [myo- + G. oidema, swelling]
A condition of localized deficiency or absence of blood supply in muscular tissue.
A device for registering the exact time and extent of contraction of the larger muscles of the lower extremity in response to electric stimulation. SYN: myocinesimeter. [myo- + ...
Continuous involuntary quivering or rippling of muscles at rest, caused by spontaneous, repetitive firing of groups of motor unit potentials. SYN: fibrillary chorea, Morvan ...
A benign neoplasm that consists chiefly of fat cells ( adipose tissue), with variable numbers of muscle cells forming portions of the neoplasm.
One learned in the knowledge of muscles.
The branch of science concerned with the muscles and their accessory parts, tendons, aponeuroses, bursae, and fasciae. SYN: myologia, sarcology (1). [myo- + G. logos, study]
Dissolution or liquefaction of muscular tissue, frequently preceded by degenerative changes such as infiltration of fat, atrophy, and fatty degeneration. [myo- + G. lysis, ...
A benign tumor of smooth muscle in the wall of the uterus. A myoma of the uterus is commonly called a fibroid. Uterine fibroids are the single most common indication for ...
Pathologic softening of muscular tissue. [myo- + G. malakia, softness]
Pertaining to or characterized by the features of a myoma.
Surgery to remove a fibroid from the uterus. A fibroid, or leiomyoma, is a benign tumor that arises from the myometrium, the muscular wall of the uterus. The first myomectomy ...
Abnormal dark pigmentation of muscular tissue. SEE ALSO: melanosis. [myo- + G. melanosis, becoming black]
SYN: myotome (4). [myo- + G. meros, a part]
An instrument for measuring the extent of a muscular contraction. [myo- + G. metron, measure]
Inflammation of the muscular wall of the uterus. [myo- + G. metra, uterus, + -itis, inflammation]
The muscular wall of the uterus. SYN: tunica muscularis uteri [TA], muscular coat of uterus. [myo- + G. metra, uterus]
Incision of a myoma. [ myoma + G. tome, incision]
An individual muscle unit. [G. mys, muscle]
Necrosis of muscle.
- clostridial m. SYN: gas gangrene.
1. A muscle fibril. 2. One of the contractile fibrils of certain protozoans; thought to function in an analogous fashion to metazoan muscle fibers. [myo- + G. nema, thread]
Relating to both muscle and nerve; denoting specifically the synapse of the motor neuron with striated muscle fibers: m. junction or motor endplate. SEE ALSO: neuromuscular. ...
A tumefaction consisting chiefly of abnormally proliferating Schwann cells, with variable numbers of muscle cells forming portions of the mass; myoneuromas are probably ...
Nomenclature of the muscles. [myo- + G. onyma or onoma, name]
Muscular hypertrophy. [myo- + G. pachynsis, a thickening]
Muscle twitching. [myo- + G. palmos, a quivering]
Denoting a disorder involving muscular tissue.
Any abnormal condition or disease of the muscular tissues; commonly designates a disorder involving skeletal muscle. [myo- + G. pathos, suffering]
- carcinomatous m. SYN: Lambert- ...
Myopathy, mitochondrial (MELAS)
MELAS is the acronym for Mitochondrial Encephalopathy, Lactic Acidosis, and Stroke-like episodes. MELAS is a form of dementia. It is caused by mutations in the genetic ...
Inflammation of the muscular wall of the heart and of the enveloping pericardium; also, perimyocarditis—choice of term determined by whether the principal involvement is ...
Inflammation of the parietal peritoneum with myositis of the abdominal wall.
An instrument to enable one to hear the murmur of muscular contractions. [myo- + G. phone, sound]
Nearsightedness, the ability to see close objects more clearly than distant objects. Myopia can be caused by a longer-than-normal eyeball or by any condition that prevents light ...
Relating to or suffering from myopia.
The contractile portion of the muscle cell, as distinguished from the sarcoplasm. [myo- + G. plasma, a thing formed]
Relating to the plastic surgery of the muscles, or to the use of muscular tissue to correct a defect.
Plastic surgery of muscular tissue. [myo- + G. plastos, formed]
Relating to muscular polarity, or to the portion of muscle between two electrodes.
Suture of a muscle. [myo- + G. rhaphe, seam]
Tearing of a muscle. [myo- + G. rhexis, a rupture]
Inflammation of the muscular tissue of the uterine tube. [ myosalpinx + G. -itis inflammation]
The muscular tunic of the uterine tube. [myo- + salpinx]
A general term for a malignant neoplasm derived from muscular tissue. SEE ALSO: leiomyosarcoma, rhabdomyosarcoma.
Chronic myositis with hyperplasia of the interstitial connective tissue.
SYN: myocomma. [myo- + L. saeptum, a barrier]
A globulin present in muscle that has an ATPase activity; in combination with actin, it forms actomyosin; m. forms the thick filaments in muscle.
- m. light chain kinase a ...
A proteose formed by the partial hydrolysis of myosin.
Inflammation of a muscle. SYN: initis (2). [myo- + G. -itis, inflammation]
- cervical m. posttraumatic neck syndrome.
- epidemic m., m. epidemica acuta SYN: epidemic ...
A chronic granulomatous reaction to undetermined spherical structures frequently contained within a microscopic cyst; first reported in cystic lesions in skeletal muscle from ...
An instrument for measuring the power of muscle groups. [myo- + G. sthenos, strength, + metron, measure]
The supporting connective tissue or framework of muscular tissue. [myo- + G. stroma, mattress]
Relating to the muscular sense. [myo- + L. tactus, a touching]
Stretching of a muscle. [myo- + G. tasis, a stretching]
Inflammation of a muscle with its tendon. [myo- + G. tenon, tendon, + -itis, inflammation]
Cutting through the principal tendon of a muscle, with division of the muscle itself in whole or in part. SYN: tenomyotomy, tenontomyotomy. [myo- + G. tenon, tendon, + tome, ...
Relating to the increased temperature in muscular tissue resulting from its contraction. [myo- + G. therme, heat]
1. A knife for dividing muscle. 2. In embryos, that part of the somite that develops into skeletal muscle. SYN: muscle plate. 3. All muscles derived from one somite and ...
1. Anatomy or dissection of the muscles. 2. Surgical division of a muscle. [myo- + G. tome, excision]
- cricopharyngeal m. division of the cephalad portion of the ...
Delayed relaxation of a muscle after a strong contraction, or prolonged contraction after mechanical stimulation (as by percussion) or brief electrical stimulation; due to ...
Pertaining to or exhibiting myotonia.
An inherited disease in which the muscles contract but have decreasing power to relax — this phenomenon is termed myotonia (irritability and prolonged contraction of muscles). ...
Denoting a muscular reaction, naturally or electrically excited, characterized by slow contraction and, especially, slow relaxation. [myo- + G. tonos, tone, tension, + eidos, ...
A tonic spasm or temporary rigidity of a muscle or group of muscles. [myo- + G. tonos, tension, stretching]
Muscular tonus or tension. SYN: myotone. [myo- + G. tonos, tension]
Nutrition of muscular tissue. [myo- + G. trophe, nourishment]
A skeletal muscle fiber formed by the fusion of myoblasts during a developmental stage; a few myofibrils occur at the periphery, and the central core is occupied by nuclei and ...
A family of relatively large bacterial viruses with complex contractile tails, heads that are usually elongated but are isometric in some species, and a double-stranded DNA ...
A great number, a very large number, a huge number of something. There are, for example, myriad ways in which syphilis can present; it is the great imitator. "Myriad" is a Greek ...
The bark of M. cerifera (family Myricaceae); used in diarrhea and icterus, and externally in sore throat. SYN: bayberry bark.
Myricyl palmitate, a white, almost odorless solid that is the chief constituent of beeswax.
SYN: tympanic membrane. [Mod. L. drum membrane]
Excision of the tympanic membrane. [ myring- + G. ektome, excision]
Inflammation of the tympanic membrane. SYN: tympanitis. [ myring- + G. -itis, inflammation]
- m. bulbosa SYN: myringodermatitis.
- bullous m. painful inflammation of the ...
Inflammation of the meatal or outer surface of the drum membrane and the adjoining skin of the external auditory canal. SYN: myringitis bulbosa.
Operative repair of a damaged tympanic membrane. [myringo- + G. plasso, to form]
Formation of dense connective tissue in the tympanic membrane, usually not associated with hearing loss. [myringo- + sclerosis]
A technique of tympanoplasty in which the tympanic membrane or grafted tympanic membrane is brought into functional connection with the stapes. [myringo- + L. stapes, stirrup ...
A knife used for paracentesis of the tympanic cavity. [myringo- + G. tome, excision]
A surgically placed tiny incision in the eardrum. Any fluid behind the eardrum can then drain and usually thickened secretions can be removed. A small plastic ear tube (a ...
SYN: tympanic membrane. [Mod. L. myringa, drum membrane]
A saturated fatty acid present as an acylglycerol in milk, vegetable fats, cod liver oil, and waxes. SYN: tetradecanoic acid.
SYN: nutmeg. [G. myrizo, to anoint, fr. myron, an unguent]
- m. oil SYN: nutmeg oil.
A constituent of nutmeg thought to be responsible, at least in part, for the bizarre central nervous system symptoms produced by the ingestion of large amounts of nutmeg.
A 14-carbon unsaturated fatty acid with a double bond between carbons 9 and 10; the 14-carbon analog of oleic acid.
A form of viral wart in which the lesion has a domed surface ( i.e., an ant hill configuration) and is associated with pale staining intranuclear and amphophilic ...
A gum resin from Commiphora molmol and C. abyssinica (family Burseraceae) and other species of C., a shrub of Arabia and eastern Africa; used as an astringent, tonic, and ...
SYN: coprophilia (2). [G. mysos, defilement, + philos, fond]
Morbid fear of dirt or defilement from touching familiar objects. SYN: rhypophobia. [G. mysos, defilement, + phobos, fear]
A form of stammering in which the letter m is frequently substituted for other consonants. SYN: mutacism. [G. my, the letter μ]
Gradually decreasing in thickness, as a mouse's tail; rarely used term denoting certain symptoms in process of cessation, or the heartbeat in certain cases in which it grows ...
Faulty secretion of mucus. [myx- + G. astheneia, weakness]
Hypothyroidism characterized by a relatively hard edema of subcutaneous tissue, with increased content of mucins ( proteoglycans) in the fluid; characterized by somnolence, slow ...
Hypothyroidism (subnormal activity of the thyroid gland) that starts after birth and is manifest by features including delays in growth and development and myxedema surfacing ...
SYN: mucinemia. [myx- + G. haima, blood]
Mucus. SEE ALSO: muci-, muco-. [G. myxa, mucus]
A malignant neoplasm derived from fibrous connective tissue, i.e., a fibrosarcoma, in which there are intimately associated foci of cartilaginous and myxomatous tissue. [myxo- ...
A benign neoplasm of cartilaginous tissue, i.e., a chondroma, in which the stroma resembles relatively primitive mesenchymal tissue. SYN: myxoma enchondromatosum. [myxo- + G. ...
A protozoon once found in the body of the mosquito, Stegomyia calopus, that had fed on the blood of a patient with yellow fever; the organism was then postulated, incorrectly, ...
One of the stellate or polyhedral cells present in mucous tissue. [myxo- + G. kytos, cell]
A benign neoplasm of fibrous connective tissue that resembles primitive mesenchymal tissue. SYN: fibroma myxomatodes, myxoma fibrosum. [myxo- + L. fibra, fiber, + G. -oma, ...
A malignant fibrous histiocytoma with a predominance of myxoid areas that resemble primitive mesenchymal tissue. [myxo- + L. fibra, fiber, + G. sarx, flesh, + -oma, tumor]
Resembling mucus. [myxo- + G. eidos, resemblance]
A benign neoplasm of adipose tissue in which portions of the tumor resemble mucoid mesenchymal tissue. SYN: lipoma myxomatodes, myxoma lipomatosum. [myxo- + G. lipos, fat, + ...
A benign neoplasm derived from connective tissue, consisting chiefly of polyhedral and stellate cells that are loosely embedded in a soft mucoid matrix, thereby resembling ...
1. SYN: mucoid degeneration. 2. Multiple myxomas.
1. Pertaining to or characterized by the features of a myxoma. 2. Said of tissue that resembles primitive mesenchymal tissue.
A class of fungi containing the slime molds, which occur on rotting vegetation but are not pathogenic for humans. [myxo- + G. mykes, fungus]
1. Obsolete term for a tumefaction resulting from abnormal proliferation of Schwann cells, in which focal or diffuse degenerative changes result in portions that resemble ...
A benign neoplasm of epithelial tissue in which the stroma resembles primitive mesenchymal tissue. [myxo- + L. papilla, a nipple, + G. -oma, tumor]
Mucus production. [myxo- + G. poiesis, a making]
A sarcoma, usually a liposarcoma or malignant fibrous histiocytoma, with an abundant component of myxoid tissue resembling primitive mesenchyme containing connective tissue ...
A subphylum of the phylum Protozoa, characterized by the presence of spores of multicellular origin, usually with two or three valves, two or more polar filaments, and an ...
A class of Myxozoa with spores containing one to six (usually two) polar capsules, each containing a coiled polar filament; parasitic in the celom or tissues of cold-blooded ...
Term formerly used for viruses with an affinity for mucins, now included in the families Orthomyxoviridae and Paramyxoviridae. The myxoviruses included influenza virus, ...
A phylum of the subkingdom Protozoa, characterized by spores of multicellular origin (usually with two or three valves), one to six polar capsules or nematocysts (each with a ...
Symbol for millimicron.
1. Symbol for newton; nitrogen; asparagine; nucleoside; normal solution; haploid chromsome number. 2. Designation for an inherited blood factor. See MNSs blood group, Blood ...
Symbol for nano- (2); reaction order.
Symbol for normal concentration. See normal (3).
1. The number in a scientific study. Sample size. 2. Symbol for refractive index.
A psychotomimetic agent present in several South American snuffs ( e.g., cohoba snuff) and in the leaves of Prestonia amazonica (family Apocynaceae). Effects are similar to ...
An acetylated derivative of aspartate found in the brain. Used as a marker in brain NMR and in neuroimaging.
The salt of N-acetylglutamic acid. An activator of carbamoyl phosphate synthetase I during urea synthesis; this amino acid causes a configurational change in the enzyme, ...
An amino acid that has an acyl group attached to its N, as in hippuric acid (N-benzoylglycine) or phenaceturic acid.