anything that serves to indicate, warn, direct, command, or the like, as a light, a gesture, an act, etc.:
a traffic signal; a signal to leave.
anything agreed upon or understood as the occasion for concerted action.
an act, event, or the like that causes or incites some action:
The unjust execution was the signal for revolt.
a token; indication.
Electronics. an electrical quantity or effect, as current, voltage, or electromagnetic waves, that can be varied in such a way as to convey information.
Cards. a play that reveals to one’s partner a wish that he or she continue or discontinue the suit led.
serving as a signal; used in signaling:
a signal flag.
unusual; notable; outstanding:
a signal exploit.
verb (used with object), signaled, signaling or (especially British) signalled, signalling.
to make a signal to.
to communicate or make known by a signal.
verb (used without object), signaled, signaling or (especially British) signalled, signalling.
to make communication by a signal or signals.
any sign, gesture, token, etc, that serves to communicate information
anything that acts as an incitement to action: the rise in prices was a signal for rebellion
a variable parameter, such as a current or electromagnetic wave, by which information is conveyed through an electronic circuit, communications system, etc
the information so conveyed
(as modifier): signal strength, a signal generator
distinguished or conspicuous
used to give or act as a signal
verb -nals, -nalling, -nalled (US) -nals, -naling, -naled
to communicate (a message, etc) to (a person)
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.
- Signalling rate
communications The number of times per second the amplitude, frequency or phase of the signal transmitted down a communications channel changes each second. The signalling rate is measured in baud. (1998-02-14)
- Signalling system 7
protocol (SS7) A protocol suite used for communication with, and control of, telephone central office switches and their attached processors. (1995-03-01)
adverb 1. conspicuously; notably. adverb 1. conspicuously or especially
noun, plural signalmen. 1. a person whose occupation or duty is signaling, as on a railroad or in the army. noun (pl) -men 1. a railway employee in charge of the signals and points within a section 2. a man who sends and receives signals, esp in the navy