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pteridosperm

American  
[tuh-rid-uh-spurm, ter-i-doh-] / təˈrɪd əˌspɜrm, ˈtɛr ɪ doʊ- /

noun

  1. seed fern.

pteridosperm British  
/ ˈtɛrɪdəˌspɜːm /

noun

  1. Also called: seed fern.  any extinct seed-producing fernlike plant of the group Pteridospermae

"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

Etymology

Origin of pteridosperm

1900–05; < New Latin Pteridospermales the order; pterido-, sperm 1, -ales

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.