口こう裂れつ

noun

oral slit; oral fissure; rima oris

Medical/anatomical term for the opening between the lips.

• 口こう裂れつの大おおきさは個こ人じん差さがある。

  The size of the oral slit varies from person to person.

noun

cytostome

Biology term for a cell mouth; see also 細胞口.

See also: 細胞口

• 原げん生せい動どう物ぶつの口こう裂れつは細さい胞ぼう口こうとも呼よばれる。

  The cytostome of protozoa is also called a cell mouth.