the branch of botany dealing with ferns and related plants, as the horsetails and club mosses.
the branch of botany concerned with the study of ferns and related plants
[tuh-rid-uh-fahyt, ter-i-doh-] /təˈrɪd əˌfaɪt, ˈtɛr ɪ doʊ-/ noun 1. any plant of the division Pteridophyta, characterized by vascular tissue and differentiation into root, stem, and leaves, comprising the ferns, horsetails, and club mosses. pteridophyte /ˈtɛrɪdəʊˌfaɪt/ noun 1. (in traditional classification) any plant of the division Pteridophyta, reproducing by spores and having vascular tissue, roots, stems, […]
[tuh-rid-uh-spurm, ter-i-doh-] /təˈrɪd əˌspɜrm, ˈtɛr ɪ doʊ-/ noun 1. seed fern. pteridosperm /ˈtɛrɪdəˌspɜːm/ noun 1. any extinct seed-producing fernlike plant of the group Pteridospermae Also called seed fern
noun, Craniometry. 1. the craniometric point at the side of the sphenoidal fontanelle. pterion pter·i·on (těr’ē-ŏn’, tēr’-) n. The junction of the greater wing of the sphenoid bone and the squamous temporal, the frontal, and the parietal bones.
1. a combining form meaning “wing,” “feather,” used in the formation of compound words: pterodactyl. combining form 1. wing, feather, or a part resembling a wing: pterodactyl ptero- or pter- pref. Wing; feather: pterion.
[ter-uh-kahr-puh s] /ˌtɛr əˈkɑr pəs/ adjective, Botany. 1. having winged fruit.