noun the swimming bell or umbrella of a jellyfish of medusa.
2. nectocalyx ·noun one of the zooids of certain siphonophora, having somewhat the form, and the essential structure, of the bell of a jellyfish, and acting as a swimming organ.
noun the swimming bell or umbrella of a jellyfish of medusa.
2. nectocalyx ·noun one of the zooids of certain siphonophora, having somewhat the form, and the essential structure, of the bell of a jellyfish, and acting as a swimming organ.
Webster English vocab. Английский словарь Webster. 2012