/ Dictionary / Index T Torricelli's law: Meaning and Definition of Find definitions for: Tor'ricel'li's law' Pronunciation: [key] — Physics. Physics. the law that states that the speed of flow of a liquid from an orifice is equal to the speed that it would attain if falling freely a distance equal to the height of the free surface of the liquid above the orifice. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Torricelli torrid Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language