Dictionary.com
definitions
  • synonyms

pteridosperm

[tuh-rid-uh-spurm, ter-i-doh-]
noun
  1. seed fern.
Show More

Origin of pteridosperm

1900–05; < New Latin Pteridospermales the order; see pterido-, sperm1, -ales
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for pteridosperm

pteridosperm

noun
  1. any extinct seed-producing fernlike plant of the group PteridospermaeAlso called: seed fern
Show More

Word Origin

C19: from Greek pteris a fern + -sperm
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012