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[A] catachrestical and improper way of speaking. Jer. Taylor. [1913 Webster]
a. Teaching what is useful. “A chrestomathic school.” Southey. [ 1913 Webster ]
n. [ Gr. &unr_;; &unr_; useful + &unr_;, &unr_;, to learn. ] A selection of passages, with notes, etc., to be used in acquiring a language;
n. [ Gr. &unr_; useful for many purposes;
Polychrest salt (Old Med. Chem.),