The Collaborative International Dictionary of English v.0.48:
Prominent \Prom"i*nent\, a. [L. prominens, -entis, p. pr. of
prominere to jut out, to project; pro before, forward +
minere (in comp.) to jut, project: cf. F. prominent. See
1. Standing out, or projecting, beyond the line surface of
something; jutting; protuberant; in high relief; as, a
prominent figure on a vase.
2. Hence; Distinctly manifest; likely to attract attention
from its size or position; conspicuous; as, a prominent
feature of the face; a prominent building.
3. Eminent; distinguished above others; as, a prominent
Prominent' moth (Zool.), any moth of the family
Notodontid[ae]; a notodontian; -- so called because the
larva has a hump or prominence on its back. Several of the
species are injurious to fruit trees.