diacidadj.
/dʌɪˈasɪd/ Chemistry.
Capable of combining with two acid radicals. diacid alcohol, a diatomic alcohol containing two hydroxyl groups both replaceable by an acid radical. Thus ethene alcohol or glycol C2H4·(OH)2 is diacid, and when acted on by acetic acid may form either a mono-acetate or a di-acetate.
ΚΠ
1866 E. Frankland Lect. Notes 241 The monad radicals give monacid alcohols, the dyad radicals diacid alcohols.
1877 H. Watts Fownes's Man. Elem. Chem. 166 In the diacid glycol ethers, the two radicles by which the hydrogen is replaced may belong either to the same or to different acids.
1883 C. L. Bloxam Chem. (ed. 5) 546 The diamines..are capable of combining with 2 molecules of hydrochloric or any similar acid, which is implied by stating that they are diacid.
This entry has not yet been fully updated (first published 1895; most recently modified version published online June 2018).
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adj.1866