/ Dictionary / Index D dorsalis: Meaning and Definition of Find definitions for: dor•sal•is Pronunciation: (dôr-sal'is, -sā'lis), [key] — adj., n., pl. -sal•es —adj. dorsal. —n. a blood vessel or nerve serving the back of the part with which it is associated. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dorsal fin dorsal lip 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