[koh-sahyn] /ˈkoʊ saɪn/
Mathematics. (of a real or complex number x) the function cos x defined by the infinite series 1 − (x 2 /2!) + (x 4 /4!) − + …, where ! denotes factorial.
Compare (def 3), (def 1).
noun (of an angle)
a trigonometric function that in a right-angled triangle is the ratio of the length of the adjacent side to that of the hypotenuse; the sine of the complement cos
1630s, from co. sinus, abbreviation of Medieval Latin complementi sinus (see complement + sine).
Cooperation for Open Systems Interconnection Networking in Europe. A EUREKA project.
noun, Optics. 1. . noun, Optics. 1. the law that the luminous intensity of a perfectly diffusing surface in any direction is proportional to the cosine of the angle between that direction and the normal to the surface, for which reason the surface will appear equally bright from all directions.
[kohs] /koʊs/ verb (used without object), cosed, cosing, noun 1. . Common Open Software Environment
/ˈkɒzlə/ noun acronym 1. Convention of Scottish Local Authorities
intransitive verb to sleep in the same bed or room with a parent Word Origin 1966