repr. Gr. κυρτο- from κυρτός curved, arched. In some recent technical terms, as Cyrtoceratite Palæont., a fossil cephalopod of the genus Cyrtoceras, having the shell incurved or bent like a horn. So Cyrtoceratitic, Cyrtoceran adjs.; Cyrtoceratid, a member of the family containing Cyrtoceras. Cyrtograph, an instrument for the same purpose as the cyrtometer (Syd. Soc. Lex.). Cyrtoid a., resembling a hump or swelling on the back (Syd. Soc. Lex.). Cyrtolite Min., a variety of zircon with the pyramidal planes convex (Dana). Cyrtometer [F. cyrtomètre], an instrument for measuring and recording the curves of the chest; also (Wilson’s C.) for measurement of the head; whence Cyrtometric a., Cyrtometry. Cyrtostyle, a circular portico projecting from the front or other part of a building (Webster, 1864).
1867. Amer. Jrnl. Sc., Ser. II. XLIV. 224. Before the blowpipe cyrtolite glows brilliantly.
1870. S. Gee, Auscult. & Percuss., ii. 10. The Cyrtometer.
1879. Khory, Princ. Med., 45. When the outlines are drawn on paper by the help of the cyrtometer.
1885. Lancet, 26 Sept., 563/2. A cyrtometric tracing taken of the chest about the nipple level.
