a. 多元的, 多碱价的

[化] 多碱的; 多碱价的; 多元的; 多代的

[医] 多硷[价]的, 多元的

Polybasic \Pol`y*ba"sic\, a. [Poly- + basic.] (Chem.)
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.