Pteropterin
pteropterin pter·op·ter·in (těr-ŏp’tər-ĭn)
n.
A crystalline conjugate of folic acid containing three molecules of glutamic acid instead of one and having the general properties of a polypeptide. Also called pteroyltriglutamic acid.
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noun 1. any flying reptile of the extinct order Pterosauria, from the Jurassic and Cretaceous periods, having the outside digit of the forelimb greatly elongated and supporting a wing membrane. noun 1. any extinct flying reptile of the order Pterosauria, of Jurassic and Cretaceous times: included the pterodactyls Compare dinosaur, plesiosaur pterosaur (těr’ə-sôr’) Any of […]
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pteroylglutamic acid pter·o·yl·glu·tam·ic acid (těr’ō-ĭl-glōō-tām’ĭk) n. Folic acid.
- Pteroyltriglutamic acid
pteroyltriglutamic acid pter·o·yl·tri·glu·tam·ic acid (těr’ō-ĭl-trī’glōō-tām’ĭk) n. See pteropterin.
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- Pterygium
noun, plural pterygiums, pterygia [tuh-rij-ee-uh] /təˈrɪdʒ i ə/ (Show IPA). Ophthalmology. 1. an abnormal triangular mass of thickened conjunctiva extending over the cornea and interfering with vision. pterygium pte·ryg·i·um (tə-rĭj’ē-əm) n. pl. pte·ryg·i·ums or pte·ryg·i·a (-ē-ə) An abnormal mass of tissue arising from the conjunctiva of the inner corner of the eye that obstructs vision […]