Definition of state variable in English:

state variable

noun

  • 1Physics
    = "state function".

  • 2Generally each of a number of quantities that together define mathematically the state of a system.

  • 3Electronics
    A particular kind of active bandpass filter, typically consisting of an amplifier and integrators and made as an integrated circuit; usually attributive.

Origin

1940s; earliest use found in Journal of Chemical Physics.