null

[ nuhl ]

/ nʌl /

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See synonyms for null on Thesaurus.com

adjective

without value, effect, consequence, or significance.

being or amounting to nothing; nil; lacking; nonexistent.

Mathematics. (of a set)

empty.
of measure zero.

being or amounting to zero.

noun

Electronics. a point of minimum signal reception, as on a radio direction finder or other electronic meter.

verb (used with object)

to cancel; make null.

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His boss, whom he admires, is waiting to meet with him about the big project.

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Idioms about null

null and void, without legal force or effect; not valid: This contract is null and void.

Origin of null

1555–65; <Latin nūllus, equivalent to n(e) not + ūllus any

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use null in a sentence

A P value is the probability of getting an observed result or a more extreme result if the hypothesis of getting a null result is true, given the mathematical model of the data and all other assumptions built into your experiment.
Top 10 questions I’d ask an alien from the Galactic Federation|Tom Siegfried|December 9, 2020|Science News
In studies, this neutral theory has generally not been very successful at predicting the composition of ecosystems, but many ecologists continue to find it useful as a null hypothesis for sharpening their analyses of niche-based diversity models.
How Neutral Theory Altered Ideas About Biodiversity|Christie Wilcox|December 8, 2020|Quanta Magazine
The results showed a slightly negative, but in fact statistically null, correlation between Stoicism and stoicism, contrary to what the psychologists and classics scholars I mentioned above state or imply.
The Joys of Being a Stoic - Issue 92: Frontiers|Massimo Pigliucci|November 4, 2020|Nautilus
Rosenberg says the null findings are beset by methodological flaws.
When Evolution Is Infectious - Issue 90: Something Green|Moises Velasquez-Manoff|September 30, 2020|Nautilus

“Whatever success metrics they claim to achieve are null,” said Matthew Vasilakis, the campaign’s co-director of policy.
Environment Report: County Celebrates Then Sinks Its Climate Plan|MacKenzie Elmer|September 28, 2020|Voice of San Diego
The first election, he nulled, because its irregularity was glaring.
The Works of the Right Honourable Edmund Burke, Vol. VII. (of 12)|Edmund Burke

British Dictionary definitions for null

null

/ (nʌl) /

adjective

without legal force; invalid; (esp in the phrase null and void)

without value or consequence; useless

lacking distinction; characterlessa 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

Word Origin for null

C16: from Latin nullus none, from ne not + ullus any

Collins 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

null

[ nŭl ]

Of or relating to a set having no members or to zero magnitude.

null

Idioms about null

Origin of null

Words related to null

How to use null in a sentence

British Dictionary definitions for null

Word Origin for null

Scientific definitions for null