/ Dictionary / Index I isohel: Meaning and Definition of Find definitions for: i•so•hel Pronunciation: (ī'su-hel"), [key] — n. Meteorol. a line on a weather map connecting points that receive equal amounts of sunshine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: isohel (Thesaurus) isohaline isohume Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language