meconidium (plural meconidia)
- (zoology) A kind of gonophore produced by hydroids of the genus Gonothyraea (Campanulariidae). It has tentacles, and otherwise resembles a free medusa, but remains attached by a pedicel.
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.