Word.ws English Dictionary

pelycosaur

pelycosaur noun: any of a group of basal or primitive Late Paleozoic synapsid amniotes, part of a polyphyletic grade, formerly regarded as order Pelycosauria.

Noun

pelycosaur (plural pelycosaurs)

  1. Any of a group of basal or primitive Late Paleozoic synapsid amniotes, part of a polyphyletic grade, formerly regarded as order Pelycosauria.

Forms of pelycosaur

pluralpelycosaurs

Origin of pelycosaur

Ancient Greek πέλυξ (pélux, “bowl, axe”) and σαῦρος (saûros, “lizard”).

Questions about pelycosaur

What does pelycosaur mean?
Pelycosaur means any of a group of basal or primitive Late Paleozoic synapsid amniotes, part of a polyphyletic grade, formerly regarded as order Pelycosauria.
What part of speech is pelycosaur?
Pelycosaur is a noun.
What is the plural of pelycosaur?
The plural of pelycosaur is pelycosaurs.

Words near pelycosaur in the dictionary

  1. pelviscopic
  2. pelvises
  3. pelvitis
  4. pelviureteric
  5. pelvocalyceal
  6. pelycosaur
  7. pelycosaurian
  8. pelycosaurs
  9. Pelzel
  10. Pelzels
  11. Pelzer

Source and license

Adapted from Wiktionary: pelycosaur (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “pelycosaur.” Word.ws, https://word.ws/pelycosaur. Based on Wiktionary, CC BY-SA 4.0.