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  1. UNDEFINED Definition & Meaning - Merriam-Webster

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

  2. UNDEFINED | English meaning - Cambridge Dictionary

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

  3. undefined - JavaScript | MDN

    Mar 13, 2025 · A variable that has not been assigned a value is of type undefined. A method or statement also returns undefined if the variable that is being evaluated does not have an …

  4. Undefined - definition of undefined by The Free Dictionary

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

  5. UNDEFINED definition and meaning | Collins English Dictionary

    Senators will now be taking a recess for an undefined amount of time. For the latter he prefers to use the value undefined which makes the code more explicit. In other cases, the role of local …

  6. undefined - WordReference.com Dictionary of English

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

  7. UNDEFINED Definition & Meaning | Dictionary.com

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

  8. undefined adjective - Definition, pictures, pronunciation and …

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

  9. Undefined - Definition, Meaning & Synonyms | Vocabulary.com

    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 …

  10. What is the difference in JavaScript between 'undefined' and 'not ...

    May 7, 2009 · That's what undefined means; regardless of its semantics in English, its Javascript meaning is that the variable hasn't been declared or populated yet, and so while the concept …

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