hendecoicadj.
/ˌhɛndᵻˈkəʊɪk/, U.S. /ˌhɛndᵻˈkoʊɪk/ Chemistry. Now rare or disused.
hendecoic acid n. any of a number of saturated carboxylic acids having the formula C11H22O2; esp. = hendecatoic acid n. at hendecatoic adj. (now usually called undecanoic acid).
ΚΠ
1888 M. M. P. Muir & H. F. Morley Watts' Dict. Chem. (rev. ed.) I. 55/1 The following names are employed in this dictionary, the numbers denoting the value of n: 1. formic acid, 2. acetic acid.., 11. hendecoic acid=undecylic acid.
1943 Thorpe's Dict. Appl. Chem. (ed. 4) VI. 204/1 (heading) Hendecoic acids (undecoic acids), C11H22O2.
1952 Proc. Royal Soc. A. 212 76 Marvel & Glavis (1938) roughly investigated the freezing-point diagrams of mixtures of sulphur dioxide with styrene, 10-hendecoic acid, 1-pentene and vinyl chloride respectively.
This entry has been updated (OED Third Edition, December 2019; most recently modified version published online March 2022).
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adj.1888