Definition Of signal
a gesture, action, or sound that is used to convey information or instructions, typically by prearrangement between the parties concerned.
the firing of the gun was the signal for a chain of beacons to be lit
an electrical impulse or radio wave transmitted or received.
equipment for receiving TV signals
striking in extent, seriousness, or importance; outstanding.
he attacked the administration for its signal failure of leadership
transmit information or instructions by means of a gesture, action, or sound.
hold your fire until I signal
Example Of signal
A signal is then produced indicating that the structure is complete and the scaffolding protein detaches to be used again in making other virus tails.
A signal was sounded in Post Offices across the country and customers were asked to join staff in remembering the dead and injured.
A drop in the intracellular concentration of glutamine provides a signal for the activation of transcription of nitrogen-regulated genes.
About 20 minutes later mission control erupted in cheers, hugs and tears when a signal from the craft indicated it was still functioning.
After this fun, a foghorn sounded to signal the beginning of a ‘self-guided’ walking tour.