| fogsignal | (noun) a loud low warning signal that can be heard by fogbound ships | Synonyms: foghorn |
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| signal | (noun) any nonverbal action or gesture that encodes a message | Synonyms: sign, signaling, signalling |
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| (noun) any incitement to action | - |
| (noun) an electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes | - |
| signaler | (noun) someone who communicates by signals | Synonyms: signaller |
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| signaling | (noun) any nonverbal action or gesture that encodes a message | Synonyms: sign, signal, signalling |
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| signalisation | (noun) a conspicuous indication | Synonyms: signalization |
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| signalization | (noun) a conspicuous indication | Synonyms: signalisation |
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| signaller | (noun) someone who communicates by signals | Synonyms: signaler |
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| signalling | (noun) any nonverbal action or gesture that encodes a message | Synonyms: sign, signal, signaling |
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| signalman | (noun) a railroad employee in charge of signals and point in a railroad yard | - |
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