/ Dictionary / Index I isoneph: Meaning and Definition of Find definitions for: i•so•neph Pronunciation: (ī'su-nef"), [key] — n. Meteorol. a line on a weather map or chart connecting points having the same amount of cloudiness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. isomorphous isoniazid Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language