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pseudoproct. In DICTIOUS you will not only get to know all the dictionary meanings for the word
pseudoproct, but we will also tell you about its etymology, its characteristics and you will know how to say
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English
Etymology
From pseudo- + Ancient Greek πρωκτός (prōktós, “anus”).
Noun
pseudoproct (plural pseudoprocts)
- (biology) The anal opening on the pseudembryo of an echinoderm.
1865, Philosophical Transactions of the Royal Society of London, page 524:The pseudostome and pseudoproct become obscure and are shortly obliterated, the sarcoid forming a thick, smooth, uniform layer over the stem and over its terminal disk.
1866, The Record of Zoological Literature, page 759:The pseudembryo moves rapidly in the water, rolling round and swinging from side to side ; as a rule, and especially when at rest, the surface bearing the pseudostome and pseudoproct is turned downwards.
1878, Thomas Spencer Baynes, The Encyclopedia Britannica:The pseudembryo or echinopzrdium, at first cilisted and spheroidal, becomes after a time wedge-shaped; at its broad end appears the mouth or psaudostome, and at the other the anus or pseudoproct.
1888, British Association for the Advancement of Science, Report, page 735:The larva now fixes itself by the 'pseudoproct.'
- (biology) A false osculum or secondary opening which replaces the original osculum of a sponge.
Synonyms
(false osculum of a sponge): pseudostome, pseudoscule.