noun, (sometimes lowercase)
See under .
metenkephalin met·en·keph·a·lin (mět’ěn-kěf’ə-lĭn)
An enkephalin that has a terminal methionine residue and occurs naturally as one of two such pentapeptides that are formed in the brain.
[met] /mɛt/ noun, (sometimes lowercase) 1. See under . [en-kef-uh-lin] /ɛnˈkɛf ə lɪn/ noun, Biochemistry. 1. either of two pentapeptides that bind to morphine receptors in the central nervous system and have opioid properties of relatively short duration; one pentapeptide (Met enkephalin) has the amino acid sequence Tyr-Gly-Gly-Phe-Met and the other (Leu enkephalin) has the […]
[mee-tee-er, -awr] /ˈmi ti ər, -ˌɔr/ noun 1. Astronomy. 2. any person or object that moves, progresses, becomes famous, etc., with spectacular speed. 3. (formerly) any atmospheric phenomenon, as hail or a typhoon. 4. (initial capital letter) Military. Britain’s first operational jet fighter, a twin-engine aircraft that entered service in 1944. 1. . 2. . […]
noun 1. . noun 1. a bowl-shaped depression in the earth in central Arizona: believed to have been made by the impact of a meteoroid. 4000 feet (1220 meters) wide; 600 feet (183 meters) deep.
[mee-tee-awr-ik, -or-] /ˌmi tiˈɔr ɪk, -ˈɒr-/ adjective 1. of, relating to, or consisting of . 2. resembling a in transient brilliance, suddenness of appearance, swiftness, etc.: his meteoric rise in politics. 3. of or coming from the atmosphere; meteorological. /ˌmiːtɪˈɒrɪk/ adjective 1. of, formed by, or relating to meteors 2. like a meteor in brilliance, […]