/ Dictionary / Index D Decalin: Meaning and Definition of Find definitions for: Dec•a•lin Pronunciation: (dek'u-lin), [key] — Chem., Trademark. Chem.,Trademark. a brand of decahydronaphthalene. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. decalescence decaliter Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language