/ Dictionary / Index P pinetum: Meaning and Definition of Find definitions for: pi•ne•tum Pronunciation: (pī-nē'tum), [key] — pl. -ta an arboretum of pines and coniferous trees. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pinetum (Thesaurus) Pine Tree State Pineville Related Content Daily Word Quiz: dispel Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language