-oiccomb. form

Primary stress is attracted to the first syllable of this combining form and vowels may be reduced accordingly.

Origin: Formed within English, by derivation. Etymons: -o- connective, -ic suffix.

Etymology: < -o- connective + -ic suffix.Apparently first used in caproic adj. (benzoic adj., which is earlier, is formed from benzoin + -ic). For current usage compare:1931 Jrnl. Chem. Soc. i. 1615 Radicals derived from acids by loss of the hydroxyl group will be named by changing the termination carbonic or carboxylic to carbonyl, or oic to oyl where the Geneva notation is used.1971 Nomencl. Org. Chem. (I.U.P.A.C.) (ed. 2) C. 182 Carboxyl groups COOH replacing CH₃ at the end of the main chain of an alicyclic hydrocarbon are denoted by adding ‘-oic acid’ or ‘-dioic acid’ to the name of this hydrocarbon.

Chemistry.

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Forming adjectives designating carboxylic acids and their anhydrides, as hexanoic adj. at hexane n. Derivatives, penicilloic adj., prostanoic adj.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online December 2018).

单词	-oic
释义	-oiccomb. form Primary stress is attracted to the first syllable of this combining form and vowels may be reduced accordingly. Origin: Formed within English, by derivation. Etymons: -o- connective, -ic suffix. Etymology: < -o- connective + -ic suffix.Apparently first used in caproic adj. (benzoic adj., which is earlier, is formed from benzoin + -ic). For current usage compare:1931 Jrnl. Chem. Soc. i. 1615 Radicals derived from acids by loss of the hydroxyl group will be named by changing the termination carbonic or carboxylic to carbonyl, or oic to oyl where the Geneva notation is used.1971 Nomencl. Org. Chem. (I.U.P.A.C.) (ed. 2) C. 182 Carboxyl groups COOH replacing CH₃ at the end of the main chain of an alicyclic hydrocarbon are denoted by adding ‘-oic acid’ or ‘-dioic acid’ to the name of this hydrocarbon. Chemistry. Categories » Forming adjectives designating carboxylic acids and their anhydrides, as hexanoic adj. at hexane n. Derivatives, penicilloic adj., prostanoic adj. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online December 2018). < comb. form
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