Merriam-Webster
merriam-webster.com › dictionary › null
NULL Definition & Meaning - Merriam-Webster
The meaning of NULL is having no legal or binding force : invalid. How to use null in a sentence. Did you know?
Wikipedia
en.wikipedia.org › wiki › Null
Null - Wikipedia
1 month ago - Look up Null, null, a-null, núll, or Nullus in Wiktionary, the free dictionary. ... Null (SQL) (or NULL), a special marker and keyword in SQL indicating that a data value does not exist, is not known, or is missing · Null character, the zero-valued ASCII character, also designated by NUL, ...
What is Null?
NULL is nothing. It means theres nothing there. Often its just a place holder before something is there. Say u have a bunch of variables of animals. U might set them to NULL before u know what they are. Then u might check if they are NULL before u add an animal to them. Things are initialized as NULL. More on reddit.com
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July 5, 2024ELI5: What is Null?
Suppose I send you a letter and ask you a question. a) If you send me back the letter with nothing written on it --> empty string b) If you don't send anything back --> NULL EDIT: To incorporate what u/glutier said: In scenario a, I would be able to compare your answer with others (and maybe group you with others who have no opinion on the matter). Whereas in scenario B, I cannot assume anything about your response and therefore cannot compare you to anyone. More on reddit.com
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May 8, 2013Feature Request: Blank or null (optional) numerical inputs
Version/Branch of Dear ImGui: Version: 1.75 Branch: master Back-end/Renderer/Compiler/OS Back-ends: Qt Compiler: MSVC 2019 Operating System: Windows 10 My Issue/Question: Hi! I'm trying to figu... More on github.com
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March 19, 2020What does “null” mean and why is it here
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March 21, 2023MDN Web Docs
developer.mozilla.org › en-US › docs › Web › JavaScript › Reference › Operators › null
null - JavaScript | MDN
October 28, 2025 - The null keyword refers to the null primitive value, which represents the intentional absence of any object value.
Merriam-Webster
merriam-webster.com › word-of-the-day › null-2023-07-25
Word of the Day: Null | Merriam-Webster
July 25, 2023 - Null is a technical term. In law it is commonly used in the phrase "null and void" to describe something that has no legal or binding force.
Reddit
reddit.com › r/learnprogramming › what is null?
r/learnprogramming on Reddit: What is Null?
July 5, 2024 -
So I use C# and I often see many devs use null.
What and which kind of situation do you use this variable?
I am reading c# guide on programming book and I am on Clearing memory now and I haven't encountered null yet. Should I be worried?
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This was intended as a meme but is actually a good representation of what "Null" is. In C#, when you declare string s = "My shit"; it means that "s" is a reference to a memory location that holds the data "My shit". string s = null; means that the reference "s" exists but it's not pointing to any object, as in it holds nothing.
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NULL is nothing. It means theres nothing there. Often its just a place holder before something is there. Say u have a bunch of variables of animals. U might set them to NULL before u know what they are. Then u might check if they are NULL before u add an animal to them. Things are initialized as NULL.
Thesaurus.com
thesaurus.com › browse › null
NULL Synonyms & Antonyms - 38 words | Thesaurus.com
Find 38 different ways to say NULL, along with antonyms, related words, and example sentences at Thesaurus.com.
Cambridge Dictionary
dictionary.cambridge.org › us › dictionary › english › null
NULL | definition in the Cambridge English Dictionary
1 week ago - NULL meaning: 1. having no legal force: 2. with no value or effect: 3. (of a set or matrix) containing nothing…. Learn more.
MDN Web Docs
developer.mozilla.org › en-US › docs › Glossary › Null
Null - Glossary | MDN
July 11, 2025 - In computer science, a null value represents a reference that points, generally intentionally, to a nonexistent or invalid object or address. The meaning of a null reference varies among language implementations.
Khoury College of Computer Sciences
khoury.northeastern.edu › home › kenb › MeaningOfNull.html
The Meaning of Null in Databases and Programming Languages
The main distinction between the relational null and the programming language null is the following: The relational null represents the absence of a value in a field of a record; whereas the programming language null represents one of the possible values of a variable.
Microsoft Learn
learn.microsoft.com › en-us › dotnet › csharp › language-reference › keywords › null
null keyword - C# reference | Microsoft Learn
The null keyword is a literal that represents a null reference, one that doesn't refer to any object. null is the default value of reference-type variables.
Reddit
reddit.com › r/explainlikeimfive › eli5: what is null?
r/explainlikeimfive on Reddit: ELI5: What is Null?
May 8, 2013 -
I am a software engineer but my boss isn't. I understand the difference between a null value and, say, an empty string but myself and the other programmers are unable to explain that in a way someone with business experience can understand. Please help me explain like I'm five what Null is and how it differs from the empty string.
EDIT: I love the analogy. This is a good explanation. Answer
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Suppose I send you a letter and ask you a question. a) If you send me back the letter with nothing written on it --> empty string b) If you don't send anything back --> NULL EDIT: To incorporate what u/glutier said: In scenario a, I would be able to compare your answer with others (and maybe group you with others who have no opinion on the matter). Whereas in scenario B, I cannot assume anything about your response and therefore cannot compare you to anyone.
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Let's say he has a filing cabinet. He goes in there to find a file on "Fred Johnson". If he finds a folder that has nothing in it, that's an empty string. If he can't find a folder at all, that's a null.
FindLaw
dictionary.findlaw.com › findlaw legal dictionary › null
Null - FindLaw Dictionary of Legal Terms
January 28, 2013 - [Anglo-French nul, literally, not any, from Latin nullus, from ne- not + ullus any] : having no legal or binding force : void [a contract]
Facebook
facebook.com › groups › 1023653631013270 › posts › 4872129092832352
What does a word "null" mean?
Explore the things you love · Log into Facebook · English (US) · فارسی · العربية · Türkçe · Deutsch · Français (France) · Polski · More languages…
Processing
processing.org › reference › null
null / Reference / Processing.org
Special value used to signify the target is not a valid data element. In Processing, you may run across the keyword null when trying to access data which is not there.
Merriam-Webster
merriam-webster.com › dictionary › null and void
NULL AND VOID Definition & Meaning - Merriam-Webster
August 26, 2026 - The meaning of NULL AND VOID is having no force, binding power, or validity.
Longman
ldoceonline.com › dictionary › null
null | meaning of null in Longman Dictionary of Contemporary English | LDOCE
From Longman Dictionary of Contemporary Englishnullnull /nʌl/ adjective → null and voidExamples from the Corpusnull• He decided that the marriage was null and void.• Figure 8.5 Projections of two neighbouring null geodesics on to the plane.• The use of the null hypothesis does have one very practical use.• The researcher may actually expect that the null hypothesis is faulty and should be rejected in favor of the alternative H1.• The null hypothesis that can then be tested by using the F distribution as explained in chapter 3.• This gives variables of exactly known distribution,
GitHub
github.com › ocornut › imgui › issues › 3063
Feature Request: Blank or null (optional) numerical inputs · Issue #3063 · ocornut/imgui
March 19, 2020 - Hi! I'm trying to figure out how to make float/double/int inputs nullable or able to be set blank.
Author: ocornut
UNESCO
unesco.org
UNESCO : Building Peace through Education, Science and Culture, communication and information
Learn more about UNESCO's role, vision and results. UNESCO is the United Nations Educational, Scientific and Cultural Organization. Our aim is to promote peace and security through international cooperation
Published: June 24, 2025
freeCodeCamp
freecodecamp.org › news › a-quick-and-thorough-guide-to-null-what-it-is-and-how-you-should-use-it-d170cea62840
A quick and thorough guide to ‘null’: what it is, and how you should use it
June 12, 2018 - So, variable name doesn't point to "Bob" anymore. The value 0 (all bits at zero) is a typical value used in memory to denote null. It means that there is no value associated with name.