(tə-rĭd'ə-fīt', tĕr'ĭ-dō-) n. Any of various vascular plants that reproduce by means of spores rather than by seeds, including the ferns and related plants, such as club mosses and horsetails.
[From New Latin Pteridophyta, former division name : Greek pteris, pterid-, fern; see pteridology + Greek phuton, plant; see -phyte.]
pteridophyticpte·rid'o·phyt'ic (tə-rĭd'ə-fĭt'ĭk, tĕr'ĭ-dō-) or pter'i·doph'y·tous (tĕr'ĭ-dŏf'ĭ-təs) adj.