Gyrencephala \Gyr`en*ceph"a*la\
(j[i^]r`[e^]n*s[e^]f"[.a]*l[.a]), n. pl. [NL. fr. Gr. gyro`s
round + 'egke`falos the brain.] (Zool.)
The higher orders of Mammalia, in which the cerebrum is
convoluted. -- {Gyr`en*ceph"a*lous}
(j[i^]r`[e^]n*s[e^]f"[.a]*l[u^]s), a.
[1913 Webster]