'Cycadaceous' definitions:

Definition of 'Cycadaceous'

From: GCIDE

Cycadaceous \Cyc`a*da"ceous\ (s?k`?-d?"sh?s or s?`k?-), a. (Bot.) Pertaining to, or resembling, an order of plants like the palms, but having exogenous wood. The sago palm is an example. [1913 Webster]