/ Dictionary / Index P passive-matrix: Meaning and Definition of Find definitions for: pas'sive-ma'trix Pronunciation: [key] of or pertaining to a relatively low-resolution liquid-crystal display (LCD) with low contrast, used esp. for laptop computers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. passive immunity, passive noun Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language