pteridosperm - WordReference.com Dictionary of English

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- See Also:
- - psyllium
  - Pt
  - PT
  - PTA
  - ptarmigan
  - Pte
  - PTE
  - pteranodon
  - pteridology
  - pteridophyte
  - pteridosperm
  - ptero-
  - pterobranch
  - pterodactyl
  - pteropod
  - pterosaur
  - pterygoid process
  - PTFE
  - PTO
  - Ptolemaic
  - Ptolemaic system
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pteridosperm

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Concise Oxford English Dictionary © 2008 Oxford University Press:
pteridosperm /ˈtɛrɪdə(ʊ)spəːm/

▶noun a fossil plant intermediate between the ferns and seed-bearing plants, dying out in the Triassic period.

– origin early 20th cent.: from mod. L. pteridospermeae, from Gk pteris, pterid- ‘fern’.

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