UNDEFINED Definition & Meaning - Merriam-Webster
May 23, 2026 · The meaning of UNDEFINED is not defined. How to use undefined in a sentence.
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.
What Is Undefined? - Computer Hope
Sep 7, 2025 · The meaning of undefined with an overview, related terms, and examples from programming. Understand how …
UNDEFINED definition in American English | Collins English ...
not given meaning or significance, as by a definition; not defined or explained an undefined term
Undefined - Wikipedia
Look up undefined in Wiktionary, the free dictionary.
How can I check for "undefined" in JavaScript? - Stack Overflow
If it is undefined, it will not be equal to a string that contains the characters "undefined", as the string is not undefined. You can check …
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 …