[ tuh-rid-uh-fahyt, ter-i-doh- ]
/ təˈrɪd əˌfaɪt, ˈtɛr ɪ doʊ- /


any plant of the division Pteridophyta, characterized by vascular tissue and differentiation into root, stem, and leaves, comprising the ferns, horsetails, and club mosses.

Origin of pteridophyte

1875–80; < New Latin Pteridophyta; see pterido-, -phyte

Related forms

pte·rid·o·phyt·ic [tuh-rid-uh-fit-ik, ter-i-doh-] /təˌrɪd əˈfɪt ɪk, ˌtɛr ɪ doʊ-/, pter·i·doph·y·tous [ter-i-dof-i-tuh s] /ˌtɛr ɪˈdɒf ɪ təs/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for pteridophyte


/ (ˈtɛrɪdəʊˌfaɪt) /


(in traditional classification) any plant of the division Pteridophyta, reproducing by spores and having vascular tissue, roots, stems, and leaves: includes the ferns, horsetails, and club mosses. In modern classifications these plants are placed in separate phyla

Derived Forms

pteridophytic (ˌtɛrɪdəʊˈfɪtɪk) or pteridophytous (ˌtɛrɪˈdɒfɪtəs), adjective

Word Origin for pteridophyte

C19: from pterido-, from Greek pteris fern + -phyte
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

Science definitions for pteridophyte


[ tə-rĭdə-fīt′, tĕrĭ-dō- ]

Any of various vascular plants that reproduce by spores rather than seeds; a seedless vascular plant. The pteridophytes include the lycophytes, the horsetails, and the ferns, as well as a small group of related plants called the psilophytes and several extinct phyla.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.