Dictionary entry

Tetrabasic

Webster's Dictionary 1913

Tet′ra‐bas″ic (?), a. [Tetra- + basic.] (Chem.) Capable of neutralizing four molecules of a monacid base; having four hydrogen atoms capable of replacement by bases; quadribasic; — said of certain acids; thus, normal silicic acid, Si(OH)4, is a tetrabasic acid.