Category:Subsesqui-

Sub*ses"qui-. Etym: [pref. sub- + sesqui-.] (chem.)

Defn: a prefix (also used adjectively) denoting the combination of Constituents (especially electro-negative and electro-positive Bodies) in the proportion of two to three; as, a subsesqui acetate, I. e., a salt having two equivalents of acetic acid to three of the Base.