| 单词 | racemism |
| 释义 | racemism in American English (ˈræsəˌmɪzəm; reɪˈsiˌmɪzəm) noun 1. the quality or condition of being racemic 2. racemization racemism in American English (ˈræsəˌmɪzəm, reiˈsimɪzəm) noun Chemistry (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 racemicacid Word origin [1895–1900; raceme + -ism]This word is first recorded in the period 1895–1900. Other words that entered Englishat around the same time include: apothecaries' measure, backwind, cutback, frame of reference, slapstick-ism is a suffix appearing in loanwords from Greek, where it was used to form action nounsfrom verbs (baptism). On this model, -ism is used as a productive suffix in the formation of nouns denoting action or practice,state or condition, principles, doctrines, a usage or characteristic, devotion oradherence, etc. (criticism; barbarism; Darwinism; despotism; plagiarism; realism; witticism; intellectualism) |
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