See Also: Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
homo-(dictionary)
homo(dictionary)
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Homo(encyclopedia)
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HOMO(law)
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novus homo(dictionary)

Methotrexate (medicine) and homo- (iou)


Methotrexate (medicine)


methotrexate
<drug> Analogue of dihydrofolate. Inhibits dihydrofolate reductase and kills rapidly growing cells. Therapeutic agent for leukaemias, but has a low therapeutic ratio.


homo- (iou)



homo- combining form. Before a vowel also hom-.
[from Greek homos same: see -O-.]
Used in words adopted from Greek and in English words modelled on these, and as a freely productive prefix, with the sense 'same, equal'. Freq. opp. HETERO-.
[Extracted from HOMOLOGUE.] Chemistry. Forming names of compounds which are homologues (usu. by addition of CH2) of those whose names follow, as homatropine, homocitrate, homoserine, etc.
homacanth adjective (Ichthyology) having the spines of the dorsal and anal fins symmetrical L19.
homo'cercal adjective [Greek kerkos tail] Ichthyology designating or possessing a tail with equal lobes, esp. with the spine deflected into the upper lobe M19.
homochla'mydeous adjective [Greek khlamud-, khlamus cloak] Botany having the outer and inner layers of the perianth alike, not differentiated into sepals and petals L19.
homo'chromous adjective (chiefly Botany) of uniform colour M19.
homochromy noun (Zoology) cryptic coloration L19.
homoclime noun (Geography) any of several places or regions having a similar climate E20.
homo'cyclic adjective (Chemistry) containing or designating a ring formed of atoms of a single element E20.
homo'cysteine noun (Biochemistry) an amino-acid, HSCH2CH2CH(NH2)COOH, formed as an intermediate in the metabolism of methionine and cysteine M20.
homo'desmic adjective (Crystallography) containing only a single kind of chemical bond M20.
homodimer noun (Chemistry) a dimer of two identical subunits L20.
homodont adjective (Zoology) of or possessing teeth all of the same type (as reptiles) L19.
homoge'netic adjective having a common descent or origin L19.
homogen'tisic adjective (Chemistry):
homogentisic acid, an organic acid, intermediate in the metabolism of aromatic amino acids and excreted by persons with alkaptonuria; 2,5-dihydroxyphenylacetic acid: L19.
homograft noun = HOMOTRANSPLANT noun E20.
homo'lateral adjective (chiefly Medicine) on or affecting the same side (of the body) E20.
homo'lecithal adjective (of an egg or egg cell) having the yolk uniformly distributed throughout the cytoplasm L19.
homo'nuclear adjective (Chemistry etc.) (a) (of substitution) taking place on the same ring in a polycyclic molecule; (b) composed of atoms whose nuclei are identical: M20.
homo'polar adjective characterized by equal or constant polarity L19.
homosce'dastic adjective [Greek skedastos able to be scattered, from skedannunai scatter] Statistics of equal scatter or variation; having equal variances: E20.
homosceda'sticity noun (Statistics) equal or constant variance E20.
ho'mosporous adjective (Biology) producing only one kind of spore L19.
ho'mospory noun (Biology) homosporous condition E20.
homo'thallic adjective (Mycology) having self-fertile thalli E20.
homo'thallism noun the state or condition of being homothallic E20.
homo'thally noun = homothallism M20.
homotherm noun = HOMOIOTHERM M20.
homo'thermic adjective = HOMOIOTHERMIC L19.