-sədə noun plural
Usage: capitalized
Etymology: New Latin, from Pteropsis, genus of ferns (from pter- + -opsis ) + -ida
: a subdivision of Tracheophyta comprising vascular plants (as the ferns and flowering plants) with well-developed and typically large leaves, leaf gaps usually present in the primary vascular cylinder, and sporangia abaxial on normal or modified leaves and including the classes Filicineae, Gymnospermae, and Angiospermae — compare lycopsida , psilopsida , sphenopsida