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English definition of “signal”

signal

noun [C]
 
 
/ˈsɪɡnəl/
a sign that something is true or that something is going to happen: a signal to sb It is a signal to the rest of the world that we are serious about global warming. a clear/strong /important signala signal of sth It was a strong signal of the power now wielded by big institutional investors. mixed/conflicting/contradicting signals the right/wrong signal a positive signal
COMMUNICATIONS a series of electrical or radio waves that are sent to a radio, television, or mobile phone in order to produce a sound, picture, or message: I couldn't get a signal on my phone.
(Definition of signal noun from the Cambridge Business English Dictionary © Cambridge University Press)
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