Zero Definition

zîrō, zērō
zeroed, zeroes, zeroing, zeros
The symbol or numeral 0, representing the complete absence of any quantity or magnitude.
Webster's New World
The point, marked 0, from which positive or negative quantities are reckoned on a graduated scale, as on a thermometer.
Webster's New World
The identity element for addition.
American Heritage
A cardinal number indicating the absence of any or all units under consideration.
American Heritage
The point intermediate between positive and negative quantities.
Webster's New World
Of or at zero.
Webster's New World
Without measurable value.
Webster's New World
Absent, inoperative, or irrelevant in specified circumstances.
American Heritage
Not any; no.
A snack having zero cholesterol.
Webster's New World
Designating or of a ceiling that is at or near the ground, specif. one at a height of fifty feet or lower.
Webster's New World
  • 0
zeroed, zeroes, zeroing
To adjust (an instrument, etc.) to a zero point or to an arbitrary point from which all positive and negative readings are to be measured.
Webster's New World

(computing) To change a memory location or range to values of zero; to set a variable in a computer program to zero.

Results were inconsistent because an array wasn't zeroed during initialization.
To cause or set some value or amount to be zero.
They tried to zero the budget by the end of the quarter.

To eliminate; to delete; to overwrite with zeros.

(intransitive) To disappear.
zero in
  • to adjust the zero of (a gun)
  • to aim (a gun) or concentrate (firepower) directly at or on (a target)
Webster's New World
zero in on
  • to adjust gunfire so as to be aiming directly at (a target)
  • to concentrate attention on; focus on
Webster's New World

Other Word Forms of Zero


zeros, zeroes

Idioms, Phrasal Verbs Related to Zero

Origin of Zero

  • From French zéro, from Italian zero, from Medieval Latin zephirum, from Arabic صفر (á¹£ifr, “nothing, cipher").

    From Wiktionary

  • Italian from alteration of Medieval Latin zephirum from Arabic ṭifr nothing, cipher cipher

    From American Heritage Dictionary of the English Language, 5th Edition

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