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null

1. Maths
a. quantitatively zero
b. relating to zero
c. (of a set) having no members
d. (of a sequence) having zero as a limit
2. Physics involving measurement in which an instrument has a zero reading, as with a Wheatstone bridge
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

null

[nəl]
(mathematics)
Indicating that an object is nonexistent or a quantity is zero.
(navigation)
The azimuth or elevation reading on a navigational device indicated by minimum signal output.
Any of the nodal points on the radiation patterns of some antennas.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

null

(programming)
A special value used in several languages to represent the thing referred to by an uninitialised pointer.

<database> A special value that may be stored in some database columns to represent an unknown, missing, not applicable, or undefined value. Nulls are treated completely differently from ordinary values when evaluating SQL expressions and there are several SQL constructs for dealing with nulls.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

null

A character that is all 0 bits. Also written as "NUL," it is the first character in the ASCII and EBCDIC data codes. In hex, it displays and prints as 00; in decimal, it may appear as a single zero in a chart of codes, but displays and prints as a blank space.

Nulls are naturally found in binary numbers when a byte contains all zeros, and they are used to pad fields (see padding). A null may function as a delimiter; for example, in C/C++, a null character is inserted at the end of a character string to mark the end of the text.


The Null Is the First
Note the first character at the top of this chart of ASCII characters. The 00 means 0000-0000 bits.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
A: The fact that the sale was declared null and void does not prevent the court from relying on consideration stated in the deed of sale to determine the actual amount paid by the buyer for the purpose of preventing unjust enrichment.
Accordingly the stipulation is null and void to the extent to which they increased the interest in excess of the principal amount.
In April 2015 the Supreme Board of Judges and Prosecutors (HSYK) immediately replaced two judges in two ystanbul courts after they decided to release Samanyolu Broadcasting group CEO Hidayet Karaca and 63 police officers who were arrested in government-initiated operations and declared their decisions "null and void."
What ensues is considered null and void, including the hearing itself, they underscored.
In a Channel 2 interview in January, Netanyahu said that the Bar Ilan speech was not null and void, "but the Palestinians have emptied it of content.
It quotes the United Nations Security Council Resolution 478 to the effect that "all legislative and administrative measures and actions taken by Israel, the occupying Power, which have altered or purport to alter the character and the status of the Holy City of Jerusalem, and in particular, the recent 'basic law' on Jerusalem, are null and void."
The law of celibacy for diocesan priests is null and void and its enforcement is immoral According to what is taught in Catholic ethics, a human law that results in injustice is null and void.
Federal High Court, Abuja, said that any Islamic banking licence issued by the Central Bank of Nigeria is "unlawful, illegal, ultra vires, null and void."
Salhab said Khamenei's condemnation of the STL's findings as null and void was aimed against the US and certain Lebanese parties
The Coleshill boss says he has been left 'disgusted' by the decision to declare their Aspire Midland Alliance fixture against Friar Lane as 'null and void'.
"This letter is incompatible with articles 29, 31, 33, 40 of the Transitional Constitution" dealing with fundamental rights, akol told the official SUNA, adding that the SPLM-DC is demanding the constitutional court to declare null and void the contested decision because of its unconstitutionality.
They fled after hashish was found in their car, but their lawyer argued that their arrest was null and void because it took police more than 48 hours to track them down.