‖n. pl. [ NL., from Gr. &unr_;, &unr_;, a fern + &unr_; a plant. ] (Bot.) A class of flowerless plants, embracing ferns, horsetails, club mosses, quillworts, and other like plants. See the Note under Cryptogamia. --
☞ This is a modern term, devised to replace the older ones acrogens and vascular Cryptogamia. [1913 Webster]