May 26, 2026 · 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.

This disambiguation page lists articles associated with the title Undefined. If an internal link incorrectly led you here, you may wish to …

Jan 10, 2026 · You can use undefined and the strict equality and inequality operators to determine whether a variable has a value. In …

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

Definition of undefined adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, …

Definition of 'undefined' undefined in British English (ˌʌndɪˈfaɪnd ) adjective not defined or made clear

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

Feb 22, 2011 · undefined - It is a variable which does not have any value assigned to it, so JavaScript will assign an undefined to it …

without fixed limits; indefinite in form, extent, or application: undefined authority; undefined feelings of sadness. not given meaning or …