/ Dictionary / Index I isoclinic line: Meaning and Definition of Find definitions for: i'soclin'ic line' Pronunciation: [key] an imaginary line connecting points on the earth's surface having equal magnetic dip. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. isocline isocracy 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