Leptomedusae
plural noun
Lep·to·medusae
| \ ¦lep(ˌ)tō+\
Definition of Leptomedusae
: a suborder of the order Hydroida or in some classifications a separate order of Hydrozoa comprising coelenterates in which the hydranths and the productive zooids are protected by a theca, the medusae bear gonads on the radial canals, and the lithocysts when present are of ectodermal origin
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