'Cornua Ammonis' definitions:
Definition of 'Cornua Ammonis'
- Cornu Ammonis \Cor"nu Am*mo"nis\ ([a^]m*m[=o]"n[i^]s); pl.
Cornua Ammonis. [L., horn of Ammon. See Ammonite.]
(Paleon.)
A fossil shell, curved like a ram's horn; an obsolete name
for an ammonite.
[1913 Webster]