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Catkin vs Undefined - What's the difference?

catkin | undefined |

As a noun catkin

is (botany) a type of inflorescence, consisting of a slender axis with many unisexual apetalous flowers along its sides, as in the willow and poplar.

As an adjective undefined is

lacking a definition or value.

catkin

English

(wikipedia catkin)

Noun

(en noun)
  • (botany) A type of inflorescence, consisting of a slender axis with many unisexual apetalous flowers along its sides, as in the willow and poplar.

    • Coordinate terms

    * raceme * spike

    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