transistor

/T R AE0 N Z IH1 S T ER0/
noun
  1. 1

    (semiconductors) A solid-state semiconductor device, with three terminals, which can be used for amplification, switching, voltage stabilization, signal modulation, and many other functions.

  2. 2

    A transistor radio.

Source: https://en.wiktionary.org/wiki/transistor