I. ˈpīˌsēn adjective
Usage: usually capitalized
Etymology: Latin picenus of Picenum, from Picenum, ancient Roman province in eastern central Italy
: picenian
II. noun
( -s )
Usage: capitalized
: a native or inhabitant of ancient Picenum
III. noun
( -s )
Etymology: International Scientific Vocabulary pic- (from Latin pic-, pix pitch) + -ene
: a fluorescent crystalline hydrocarbon C 22 H 14 obtained from the pitchy residue of petroleum or lignite tar; benzo-chrysene