I. ˌbīləˈtirēə
Etymology: New Latin, from bi- (I) + Latin later-, latus side + New Latin -ia — more at lateral
synonym of exocycloida
II. noun plural
also bi·lat·er·a·lia ˌbīˌlad.əˈrālēə
Usage: capitalized
Etymology: bilateria, New Latin, from bi- (I) + Latin later-, latus side + New Latin -ia; bilateralia, New Latin, from bi- (I) + Latin lateralia, neuter plural of lateralis lateral — more at lateral
: bilaterally symmetrical animals