The meaning of UNDEFINED is not defined. How to use undefined in a sentence.

UNDEFINED definition: 1. not clearly described, stated, or known: 2. not having been given a definition (= a statement…. Learn more.

Definition of undefined adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

not given meaning or significance, as by a definition; not defined or explained an undefined term

1. not defined or explained. 2. indefinite in form or extent: an undefined feeling of sadness.

UNDEFINED definition: without fixed limits; indefinite in form, extent, or application. See examples of undefined used in a sentence.

without fixed limits; indefinite in form, extent, or application: undefined authority; undefined feelings of sadness. not given meaning or significance, as by a definition;

Dec 14, 2025 · (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation. The result of division by zero is undefined.

If something is undefined it's not clear, such as your undefined vacation plans. You know you want to go somewhere during the third week of August, but you just don't know where. You …

Undefined refers to something that is not clearly explained, specified, or identified. It can also refer to a mathematical term or expression which doesn't have a conventional or meaningful value.