noun
: a bell-shaped swimming organ in some siphonophores composed of a greatly modified zooid without mouth or tentacles and serving to propel the colony by its rhythmical contractions : nectophore , nectocalyx
noun
: a bell-shaped swimming organ in some siphonophores composed of a greatly modified zooid without mouth or tentacles and serving to propel the colony by its rhythmical contractions : nectophore , nectocalyx
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012