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Webster 1913 Edition

Adj.

[

Mon-

acid

(Chem.)

Having one hydrogen atom replaceable by an acidic atom or radical.

Syn. – monoacid, monoacidic, monacidic.

Capable of neutralizing one equivalent of a monobasic acid; – said of bases, and of certain metals.

monacid ‎(not comparable)

(chemistry) Having one hydrogen atom replaceable by a negative or acid atom or radical; capable of neutralizing a monobasic acid.