/ Dictionary / Index H halocline: Meaning and Definition of Find definitions for: hal•o•cline Pronunciation: (hal'u-klīn"), [key] — n. a well-defined vertical salinity gradient in ocean or other saline water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. halocarbon halo effect Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language