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undefined

/ˌʌndɪˈfaɪnd/

EN

Not given a clear definition, meaning, or value; not defined or established.

The result of this calculation is undefined when you divide by zero.

Etymology

Formed from the negative prefix un- combined with the past participle of define, which originates from Latin definire meaning 'to set bounds to'. It entered English usage in the early 17th century.

Quick answers

What does undefined mean?

undefined means: Not given a clear definition, meaning, or value; not defined or established.

How do you pronounce undefined?

undefined: /ˌʌndɪˈfaɪnd/

How is undefined used in a sentence?

The result of this calculation is undefined when you divide by zero.