rapicadj.
/ˈreɪpɪk/, U.S. /ˈreɪpɪk/ Chemistry. Now rare.
rapic acid n. an organic acid obtained from rape oil, later identified with oleic acid.
ΚΠ
1894 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) IV. 394 Rapic Acid..occurs as glyceride..in rape-seed oil.
1923 Jrnl. Amer. Chem. Soc. 45 130 The magnesium soaps of rapic acid and of the greater part of the unsaturated acids remain in the solution in 90% alcohol.
1948 A. W. Ralston Fatty Acids & their Derivatives ii. 110 A reexamination of this acid..showed it to be identical with oleic acid, and consequently rapic acid has no separate existence.
This entry has been updated (OED Third Edition, December 2008; most recently modified version published online March 2022).
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adj.1894