a prearranged fixture for racing horses (or sometimes greyhounds) over a set course at set times
[rey-see-mik, -sem-ik, ruh-] /reɪˈsi mɪk, -ˈsɛm ɪk, rə-/ adjective, Chemistry. 1. noting or pertaining to any of various organic compounds in which racemism occurs. /rəˈsiːmɪk; -ˈsɛm-/ adjective 1. (chem) of, concerned with, or being a mixture of equal amounts of enantiomers and consequently having no optical activity racemic ra·ce·mic (rā-sē’mĭk, -sěm’ĭk, rə-) adj. Abbr. r […]
noun, Chemistry. 1. an isomeric modification of tartaric acid that is sometimes found in the juice of grapes in conjunction with the common dextrorotatory form and is optically inactive but can be separated into the two usual isomeric forms, dextrorotatory and levorotatory. noun 1. the optically inactive form of tartaric acid that is sometimes found […]
[rey-see-muh-fawrm] /reɪˈsi məˌfɔrm/ adjective, Botany. 1. having the form of a raceme.
[ras-uh-miz-uh m, rey-see-miz-uh m] /ˈræs əˌmɪz əm, reɪˈsi mɪz əm/ noun, Chemistry. 1. (of a compound) the state of being optically inactive and separable into two other substances of the same chemical composition as the original substance, one of which is dextrorotatory and the other levorotatory, as racemic acid.