a. [ Gr. &unr_; to turn round. ] Turning around; rotatory; revolving;
n. (Chem.) A salt of terephthalic acid. [ 1913 Webster ]
a. [ Terebene + phthalic. ] (Chem.) Of, pertaining to, or designating, a dibasic acid of the aromatic series, metameric with phthalic acid, and obtained, as a tasteless white crystalline powder, by the oxidation of oil of turpentine; -- called also
n. [ A dim. of 1st trepan: cf. F. tréphine. ] (Surg.) An instrument for trepanning, being an improvement on the trepan. It is a circular or cylindrical saw, with a handle like that of a gimlet, and a little sharp perforator called the center pin. [ 1913 Webster ]
v. t.