Macrocephalous
Pronunciation : Mac`ro*ceph"a*lous
Part of Speech : a.
Etymology : [Macro + Gr. kefalh` the head.]
Definition : 1. Having a large head.
2. (Bot.)
Defn: Having the cotyledons of a dicotyledonous embryo confluent, and forming a large mass compared with the rest of the body. Henslow.
Source : Webster's Unabridged Dictionary, 1913