Hypertext Webster Gateway: "nectocalyx"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Nectocalyx \Nec`to*ca"lyx\, n.; pl. {Nectocalyces}. [NL., fr.
gr. ? swimming + ? a calyx.] (Zo["o]l.)
(a) The swimming bell or umbrella of a jellyfish of medusa.
(b) 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.
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