( a. )
Symmetrical bilaterally; -- said of organisms, or parts of organisms, capable of division into two symmetrical halves only in a single plane.
( a. )
Symmetrical bilaterally; -- said of organisms, or parts of organisms, capable of division into two symmetrical halves only in a single plane.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012