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Lab vs Undefined - What's the difference?

lab | undefined |

As a noun lab

is (astronomy|galaxy) lyman-alpha blob.

As an adjective undefined is

lacking a definition or value.

lab

English

Etymology 1

Noun

(en noun)
  • (colloquial) A laboratory
  • (colloquial) A Labrador retriever
    • Derived terms
    * lab rat

    Etymology 2

    Noun

    (en noun)
  • (obsolete) A telltale; a blabber.
    • (Chaucer)

    Anagrams

    * * ----

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined