What is the meaning of signal?


  • Any nonverbal action or gesture that encodes a message.
    • usage: "signals from the boat suddenly stopped"
  • Any incitement to action.
    • usage: "he awaited the signal to start"; "the victory was a signal for wild celebration"
  • An electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes.


  • Communicate silently and non-verbally by signals or signs.
    • usage: "He signed his disapproval with a dismissive hand gesture"; "The diner signaled the waiters to bring the menu"
  • Be a signal for or a symptom of.
    • usage: "These symptoms indicate a serious illness"; "Her behavior points to a severe neurosis"; "The economic indicators signal that the euro is undervalued"


  • Notably out of the ordinary.
    • usage: "the year saw one signal triumph for the Labour party"
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APAWordNet. (2010). signal. Retrieved January 18, 2019, from http://smartdefine.org/signal/definitions/1183527
ChicagoWordNet. 2010. "signal" http://smartdefine.org/signal/definitions/1183527 (accessed January 18, 2019).
HarvardWordNet 2010, signal, Smart Define, viewed 18 January, 2019, <http://smartdefine.org/signal/definitions/1183527>.
MLAWordNet. "signal" 23 October 2010. Web. 18 January 2019. <http://smartdefine.org/signal/definitions/1183527>
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