noun
: one of the cosines of the three angles between a directed line in space and the positive directions of the axes of a rectangular Cartesian coordinate system — usually used in plural
noun
: one of the cosines of the three angles between a directed line in space and the positive directions of the axes of a rectangular Cartesian coordinate system — usually used in plural
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012