The Collaborative International Dictionary
Megacephalic
Megacephalic \Meg`a*ce*phal"ic\ (m[e^]g`[.a]*s[-e]*f[a^]l"[i^]k), Megacephalous \Meg`a*ceph"a*lous\ (m[e^]g`[.a]*s[e^]f"[.a]*l[u^]s), a. [Mega- + Gr. kefalh` head.] (Biol.) Large headed; -- applied to animals, and to plants when they have large flower heads.
Wiktionary
megacephalic
a. (context botany zoology English) Having an extremely large head.
Usage examples of "megacephalic".
It is the opposite of megacephalic, which means a large brain capacity.
One grey cold morning like any other, he returned to his cell from the refectory and found two of the strange, megacephalic imps waiting for him.
He composed himself with the utmost decorum and strode on behind the megacephalic imps.