Null often pops up in legal and scientific contexts; it was originally used in Scottish law and still carries the meaning "having no legal or binding force," especially in the phrase "null and void."

In the SQL database query language, null or NULL is a special marker used to indicate that a data value does not exist in the database.

What is the etymology of the noun null? null is a borrowing from Latin. Etymons: Latin nūllus.

NULL definition: 1. having no legal force: 2. with no value or effect: 3. (of a set or matrix) containing nothing…. Learn more.

null (nʌl) adj 1. without legal force; invalid; (esp in the phrase null and void) 2. without value or consequence; useless

Oct 28, 2025 · JavaScript is unique to have two nullish values: null and undefined. Semantically, their difference is very minor: undefined represents the absence of a value, while null represents the …

Sep 7, 2025 · The concept of null and its significance in computing with our comprehensive definition, examples, and explanations. Learn how null differs from zero and empty.

Null definition: Having no legal force; invalid.

NULL definition: without value, effect, consequence, or significance. See examples of null used in a sentence.

Mar 16, 2025 · Null indicates a state where nothing exists or no valid value is assigned. In programming, it is used to denote that a variable or a pointer does not reference any valid data.