Cycadales n 1: primitive tropical gymnosperms abundant in the Mesozoic, now reduced to a few scattered tropical forms [syn: {Cycadales}, {order Cycadales}]
Cycadales \Cycadales\ n. an order of primitive tropical gymnosperms abundant in the Mesozoic, now reduced to a few scattered tropical forms. Syn: order {Cycadales}. [WordNet 1.5]