The Collaborative International Dictionary
macrocephalous
macrocephalic \mac`ro*ce*phal"ic\, macrocephalous \mac`ro*ceph"a*lous\, a. [Macro + Gr. kefalh` the head.]
Of or pertaining to macrocephaly; having an unusually large head.
(Bot.) Having the cotyledons of a dicotyledonous embryo confluent, and forming a large mass compared with the rest of the body.
--Henslow.
Wiktionary
macrocephalous
a. 1 Having a large head. 2 Having the cotyledons of a dicotyledonous embryo confluent, and forming a large mass compared with the rest of the body.
WordNet
macrocephalous
adj. having an exceptionally large head and brain [syn: macrocephalic]
Usage examples of "macrocephalous".
No one could better describe the macrocephalous cachalot, which is sometimes more than seventy-five feet long.