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Fluence vs Undefined - What's the difference?

fluence | undefined |

As a noun fluence

is (obsolete) fluency or fluence can be a magical or mysterious force; hypnotic power; energy.

As an adjective undefined is

lacking a definition or value.

fluence

English

Etymology 1

(wikipedia fluence) From (etyl) fluence.

Noun

(en noun)
  • (obsolete) Fluency.
    • a voluble and smart fluence of tongue — Milton.
  • (physics) A measure of particle flux (or that of a pulse of electromagnetic radiation).

    • Etymology 2

    Shortened form of influence.

    Noun

    (en noun)
  • A magical or mysterious force; hypnotic power; energy.
  • * 1974 , (GB Edwards), The Book of Ebenezer Le Page , New York 2007, p. 191:
    • I don't say she would have done anything, if it had come to the point; but the fluence was on, and she got me hot.

    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