/ Dictionary / Index P pergelisol: Meaning and Definition of Find definitions for: per•gel•i•sol Pronunciation: (pur-jel'u-sôl", -sol"), [key] — n. permafrost. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Pergamum pergola Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language