Sŭb-ăp'en-nīne, a.
a. Under or at the foot of the Apennine mountains;—a term applied, in geology, to a series of tertiary strata of the older pliocene period. Lyell.
a. Under or at the foot of the Apennine mountains;—a term applied, in geology, to a series of tertiary strata of the older pliocene period. Lyell.