null
without value, effect, consequence, or significance.
being or amounting to nothing; nil; lacking; nonexistent.
Mathematics. (of a set)
of measure zero.
being or amounting to zero.
Electronics. a point of minimum signal reception, as on a radio direction finder or other electronic meter.
to cancel; make null.
Idioms about null
null and void, without legal force or effect; not valid: This contract is null and void.
Origin of null
1Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
British Dictionary definitions for null
/ (nʌl) /
without legal force; invalid; (esp in the phrase null and void)
without value or consequence; useless
lacking distinction; characterless: a null expression
nonexistent; amounting to nothing
maths
quantitatively zero
relating to zero
(of a set) having no members
(of a sequence) having zero as a limit
physics involving measurement in which an instrument has a zero reading, as with a Wheatstone bridge
Origin of null
1Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for null
[ nŭl ]
Of or relating to a set having no members or to zero magnitude.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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