POLYBASIC
Etymology
Adjective
polybasic (comparative more polybasic, superlative most polybasic)
(chemistry, of an acid) containing two or more replaceable hydrogen atoms
(chemistry, of a salt) having two or more atoms of a univalent metal
(chemistry, of a base) Having two or more basic groups; see also polybase
Source: Wiktionary
Pol`y*ba"sic, a. Etym: [Poly- + basic.] (Chem.)
Definition: Capable of neutralizing, or of combining with, several
molecules of a monacid base; having several hydrogen atoms capable of
being replaced by basic radicals; -- said of certain acids; as,
sulphuric acid is polybasic.
Source: Webster’s Unabridged Dictionary 1913 Edition