/ Dictionary / Index D decahydronaphthalene: Meaning and Definition of Find definitions for: dec•a•hy•dro•naph•tha•lene Pronunciation: (dek"u-hī"drō-naf'thu-lēn", -nap'-), [key] — n. Chem. a colorless, aromatic liquid, CH, insoluble in water and soluble in alcohol and ether: used as a solvent for oils, fats, etc., in cleaning fluids, lubricants, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. decahydrate decal Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language