Origin of signal

1350–1400; Middle English (noun) < Medieval Latin signāle, Late Latin, noun use of neuter of signālis of a sign. See sign, -al2, -al1

OTHER WORDS FROM signal

WORDS THAT MAY BE CONFUSED WITH signal

signal single

Example sentences from the Web for signal

British Dictionary definitions for signal

signal
/ (ˈsɪɡnəl) /

noun

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
  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

adjective

distinguished or conspicuous
used to give or act as a signal

verb -nals, -nalling or -nalled or US -nals, -naling or -naled

to communicate (a message, etc) to (a person)

Derived forms of signal

signaller or US signaler, noun

Word Origin for signal

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

Scientific definitions for signal

signal
[ sĭgnəl ]

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.