/ Dictionary / Index Z zero vector: Meaning and Definition of Find definitions for: ze'ro vec"tor Pronunciation: [key] — Math. Math. a vector of which all the components are zero. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. zero tillage zero-zero Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language