单词 pteroid 释义 pteroid, a. and n.|pt-, trd|[f. Gr. feather, wing, or (irreg.) fern + -oid.]A. adj.1. Resembling a wing.1858in Mayne Expos. Lex.2. Bot. Resembling a fern; fern-like, pteridoid.1890in Cent. Dict.B. n. A slender bone or ossified ligamen...