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Dictionary definition for: Signal

1. (n) any communication that encodes a message; "signals from the boat suddenly stopped"

2. (v) communicate silently and non-verbally by signals or signs; "He signed his disapproval with a dismissive hand gesture" "The diner signaled the waiters to bring the menu"

3. (s) notably out of the ordinary; "the year saw one signal triumph for the Labour party"

4. (n) any incitement to action; "he awaited the signal to start" "the victory was a signal for wild celebration"

5. (v) be a signal for or a symptom of; "These symptoms indicate a serious illness" "Her behavior points to a severe neurosis" "The economic indicators signal that the euro is undervalued"

6. (n) an electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes

WordNet 2.1 Copyright Princeton University. All rights reserved.