Tet*rac"id (?), a. [Tetra + acid.] (Chem.) Capable of neutralizing four molecules of a monobasic acid; having four hydrogen atoms capable of replacement ba acids or acid atoms; -- said of certain bases; thus, erythrine, C₄H₆(OH)₄, is a tetracid alcohol.

Tet*rac"id (?), a. [Tetra + acid.] (Chem.) Capable of neutralizing four molecules of a monobasic acid; having four hydrogen atoms capable of replacement ba acids or acid atoms; -- said of certain bases; thus, erythrine, C₄H₆(OH)₄, is a tetracid alcohol.