Me-gāth'e-roid, n.
n. [Gr. μέγας, great, θηρίον, beast, and εἶδος, form.] (Paleon.) One of a family of extinct mammals found fossil in some parts of America. The family includes the megatherium, the megalonyx, &c.
n. [Gr. μέγας, great, θηρίον, beast, and εἶδος, form.] (Paleon.) One of a family of extinct mammals found fossil in some parts of America. The family includes the megatherium, the megalonyx, &c.