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Eta vs Undefined - What's the difference?

eta | undefined |

As a determiner eta

is many.

As an adjective undefined is

lacking a definition or value.

eta

English

Etymology 1

From (etyl) .

Noun

(en noun)
  • The seventh letter of the Modern Greek alphabet, the eighth in Old Greek.
  • (particle) A kind of electrically neutral meson having zero spin and isospin.

    • Etymology 2

    From (etyl) .

    Noun

    (en-noun)
  • A social outcast in Japan who is subjected to menial work, making up a class or caste of such people.

    • Anagrams

    * , (l), (l), (l), (l) English heteronyms ----

    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