Definition of "zero" [ze•ro]

  • The numerical symbol 0; a cipher. (noun)
  • Mathematics The identity element for addition. (noun)
  • Mathematics A cardinal number indicating the absence of any or all units under consideration. (noun)
  • Mathematics An ordinal number indicating an initial point or origin. (noun)
  • Mathematics An argument at which the value of a function vanishes. (noun)
  • The symbol 0, indicating an absence of quantity or magnitude; nought (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

  • The integer denoted by the symbol 0; nought (noun)
  • The cardinal number between +1 and –1 (noun)
  • Nothing; nil (noun)
  • A person or thing of no significance; nonentity (noun)
  • The lowest point or degree (noun)
  • The line or point on a scale of measurement from which the graduations commence (noun)
  • The temperature, pressure, etc, that registers a reading of zero on a scale (noun)
  • The value of a variable, such as temperature, obtained under specified conditions (noun)
  • A gunsight setting in which accurate allowance has been made for both windage and elevation for a specified range (noun)
  • The cardinal number of a set with no members (noun)
  • The identity element of addition (noun)
  • An allomorph with no phonetic realization, as the plural marker of English sheep (noun)
  • (as modifier) (noun)
  • A bond that pays no interest, the equivalent being paid in its redemption value (noun)
  • Having no measurable quantity, magnitude, etc (adjective)
  • (of a cloud ceiling) limiting visibility to 15 metres (50 feet) or less (adjective)
  • (of horizontal visibility) limited to 50 metres (165 feet) or less (adjective)
  • To adjust (an instrument, apparatus, etc) so as to read zero or a position taken as zero (verb)
  • No (thing) at all (determiner) (c) HarperCollins Publishers Ltd 2016

Use "zero" in a sentence
  • "The term "zero tolerance" came into popular usage during the Reagan presidency when Congress passed the Drug-Free Schools and Communities Act."
  • "The potential of electric vehicles and fuel cell vehicles to dramatically cut emissions from cars is tremendous, though the term "zero emissions motoring" needs to be treated with caution."
  • "Over the past two months in particular, Turkey's leaders have been adjusting a foreign policy that went under the rubric "zero problems with neighbors" to changes forced by the Arab Spring, analysts say."