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1. Having no legal force; invalid: render a contract null and void.
2. Of no consequence, effect, or value; insignificant.
3. Amounting to nothing; absent or nonexistent: a null result.
4. Mathematics Of or relating to a set having no members or to zero magnitude.
tr.v. nulled, null·ing, nulls
To make null.
1. Zero; nothing.
2. An instrument reading of zero.

[French nul, from Old French, from Latin nūllus; see ne in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Architecture) architect a ridged or notched moulding or form of decoration
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Hijres, "Fast method for sidelobe nulling in a partially adaptive linear array using the elements positions," IEEE Antennas and Wireless Propagation Letters, vol.
Onay, "Amplitude-only pattern nulling of linear antenna arrays with the use of bees algorithm," Progress in Electromagnetics Research, vol.