Definition of plesiosauria
English to English noun - any of the plesiosaurs
source: WordNet 3.0 - An extinct order of Mesozoic marine reptiles including the genera Plesiosaurus, and allied forms; -- called also Sauropterygia.
source: Webster 1913
Visual Synonyms 
Nearby Word
plesiosauria, plesiosaur, pelicosauria, pelycosauria, pelycosaur, plessor, pleasure, plowshare, pleasurer, pulsar, plexor, plaguer, plexure, pleaser, paleography, plagiary, pellagra, paleozoic era, pulicaria, plagiarism
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