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a.1.(Chem.) Capable of uniting with five molecules of a monacid base; having five acid hydrogen atoms capable of substitution by a basic radical; - said of certain acids.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
It can generate pentabasic 1,3-oxazole which is an important compound in both synthetic chemistry [5] and biochemistry [6-9] through [3 + 2] ring addition reaction with alkyne.