Definition of


  1. (noun, artifact) the sight setting that will cause a projectile to hit the center of the target with no wind blowing
  2. (noun, cognition) the point on a scale from which positive or negative numerical quantities can be measured
  3. (noun, quantity) a quantity of no importance
    reduced to nil all the work we had done
    we racked up a pathetic goose egg
    it was all for naught
    I didn't hear zilch about it
  4. (noun, quantity) a mathematical element that when added to another number yields the same number
  5. (verb, change) adjust (as by firing under test conditions) the zero of (a gun)
  6. (verb, change) adjust (an instrument or device) to zero value
  7. (adj, all) indicating the absence of any or all units under consideration
  8. (adj, all) indicating an initial point or origin
  9. (adj, all) having no measurable or otherwise determinable value
  10. (adj, pert) of or relating to the null set (a set with no members)

via WordNet, Princeton University

Origin of the word Zero

  1. 1604, from It. zero, from M.L. zephirum, from Arabic sifr "cipher," translation of Skt. sunya-m "empty place, desert, naught" (see cipher). A brief history of the invention of "zero" can be found here. Meaning "worthless person" is recorded from 1813. The verb zero in is 1944, from the noun, on the notion of instrument adjustments. Zero tol… more

via Online Etymology Dictionary, ©2001 Douglas Harper

Words that sound like Zero

zaar, zaire, zaria, zechariah, zero hour, zocor, zori, zr

via soundex() Hash Matches

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