noun
: either member of one or more pairs of mesenteries in actinians that differ from other mesenteries in the arrangement of the muscles and serve to determine the longitudinal plane of the body
noun
: either member of one or more pairs of mesenteries in actinians that differ from other mesenteries in the arrangement of the muscles and serve to determine the longitudinal plane of the body
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012