D defs.my
Entry 6 senses Webster, 1913

Fluxion

· Flux·ion · IPA /ˈflʌkʃən/
01 n. The act of flowing.
  1. 1.
    The act of flowing.
  2. 2.
    The matter that flows.
  3. 3.
    Fusion; the running of metals into a fluid state.
  4. 4.
    An unnatural or excessive flow of blood or fluid toward any organ; a determination.(Med.)
  5. 5.
    A constantly varying indication.
    “Less to be counted than the fluxions of sun dials.” De Quincey.
  6. 6.
    The infinitely small increase or decrease of a variable or flowing quantity in a certain infinitely small and constant period of time; the rate of variation of a fluent; an incerement; a differential.(Math.)