( n. )
Sometimes a curve, or surface, or volume is considered as described by a moving point, or curve, or surface, the latter being at any instant called an element of the former.
( n. )
Sometimes a curve, or surface, or volume is considered as described by a moving point, or curve, or surface, the latter being at any instant called an element of the former.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012