a. Obs. [ad. It. cossico, f. cosa, cossa: see COSS sb.1] Pertaining to algebra, algebraic.
1557. Recorde (title), The Whetstone of Witte, whiche is the seconde parte of Arithmetike: containyng the extraction of Rootes: The Cossike practise, with the rule of Equation. Ibid., S j b. Nombers Cossike, are soche as bee contracte vnto a denomination of some Cossike signe as 1. nomber, 1. roote, 1 square, 1. Cube, &c.
a. 1656. Bp. Hall, Via Media, Rem. Wks. (1660), 367. Strigelius … likens the place of predestination in Divinity to the Cossick Rule in Arithmetic.
1656. trans. Hobbes’ Elem. Philos. (1839), 316. Algebra, or the analytics specious, symbolical, or cossick.
1674. Dary, in Rigaud, Corr. Sci. Men (1841), II. 366. An universal series for any equation of two cossic notes.
1838–9. Hallam, Hist. Lit., I. iii. i. § 135. 331.
Hence † Cossicly adv., algebraically.
1557. Recorde, Whetst., S j. There bee some called nombers denominate vulgarely: and other bee called nombers denominate Cossikely.
