Noun: acotyledon ,ey-kót'lee-d(u)n [N. Amer], u,kó-tu'lee-d(u)n [Brit]
- (botany) a plant that has no cotyledons, e.g. all flowerless plants, esp. fern and moss
"Ferns are classified as acotyledons"
Derived forms: acotyledons
Encyclopedia: Acotyledon