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SIGNAL Definition & Meaning | Dictionary.com

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View synonyms for signal

signal

[ sig-nl ]

noun

  1. anything that serves to indicate, warn, direct, command, or the like, such as a light, a gesture, an act, etc.: a signal to leave.

    a traffic signal;

    a signal to leave.

    Synonyms: sign

  2. anything agreed upon or understood as the occasion for concerted action.
  3. an act, event, or the like that causes or incites some action:

    The unjust execution was the signal for revolt.

  4. a token; indication.

    Synonyms: sign

  5. Electronics. an electrical quantity or effect, as current, voltage, or electromagnetic waves, that can be varied in such a way as to convey information.
  6. Cards. a play that reveals to one's partner a wish that they continue or discontinue the suit led.


adjective

  1. serving as a token or indication; used in communiating an intention, warning, or command:

    a signal flag.

  2. unusual; notable; outstanding:

    a signal exploit.

    Synonyms: striking, remarkable, exceptional, unique

verb (used with object)

signaled, signaling or (especially British) signalled, signalling.
  1. to make a token or indication to.
  2. to communicate or make known by a token or indication.

verb (used without object)

signaled, signaling or (especially British) signalled, signalling.
  1. to make communication by something that serves to indicate, warn, direct, command, or the like.

signal

/ ˈsɪɡnəl /

noun

  1. any sign, gesture, token, etc, that serves to communicate information
  2. anything that acts as an incitement to action

    the rise in prices was a signal for rebellion

    1. a variable parameter, such as a current or electromagnetic wave, by which information is conveyed through an electronic circuit, communications system, etc
    2. the information so conveyed
    3. ( as modifier )

      signal strength

      a signal generator

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. distinguished or conspicuous
  2. used to give or act as a signal
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. to communicate (a message, etc) to (a person)
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

signal

/ sĭgnəl /

  1. A fluctuating quantity or impulse whose variations represent information. The amplitude or frequency of voltage, current, electric field strength, light, and sound can be varied as signals representing information.
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Derived Forms

  • ˈsignaller, noun
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Other Words From

  • sig·nal·er especially British sig·nal·ler noun
  • pre·sig·nal noun verb (used with object) presignaled presignaling or (especially British) presignalled presignaling
  • re·sig·nal verb resignaled resignaling or (especially British) resignalled resignalling
  • un·sig·naled adjective
  • un·sig·nalled adjective
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Word History and Origins

Origin of signal1

First recorded in 1350–1400; Middle English noun from Old French seignal, signal, from Medieval Latin signāle, Late Latin, noun use of neuter of signālis “of a sign”; sign, -al 2, -al 1
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Word History and Origins

Origin of signal1

C16: from Old French seignal, from Medieval Latin signāle, from Latin signum sign
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Example Sentences

Embattled House Speaker Mike Johnson turned to Democrats after a number of his colleagues signaled an unwillingness to tweak the debt ceiling or approve more spending.

From Salon

Tech billionaire Elon Musk, an ally of Trumpov, posted his opposition to it and then the president-elect signalled he wanted his party to kill it, which is what happened.

From BBC

Rail Delivery Group, which represents National Rail and train operators, said cancellations could be caused by weather, industrial action, trespass and track, train or signalling faults.

From BBC

Republicans voting against the bill signaled their opposition to any long-term debt ceiling adjustments.

From Salon

But that still left the question of interpreting the signal, which Dr Heller likens to finding a match for a fingerprint.

From BBC

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