a.1.Slightly acid; subacid.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Oxazinone ring is very reactive semiacid anhydride ring and can be transformed into pyrimidinone ring via reaction with various nitrogen nucleophiles.
Nowadays, refractory industry uses refractory clay and kaolin: primary, secondary, carried by water currents for the production of chamotte refractory and semiacid aluminosilicate products.
By using unenriched kaolin raw materials low alumina semiacid aluminosilicate refractory materials can be obtained and on the basis of enriched kaolin--fireclay sealed aluminosilicate refractory materials in accordance with standard technical documentation.