( a. )
Replaced by two planes inclining equally upon the adjacent planes, as an edge; having its edges replaced by sloping planes, as a cube or other solid.
( a. )
Replaced by two planes inclining equally upon the adjacent planes, as an edge; having its edges replaced by sloping planes, as a cube or other solid.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012