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    • 1. transmit information or instructions by means of a gesture, action, or sound: "hold your fire until I signal"
  2. signal verb (ACTION) C2 [ I or T ] to make a movement, sound, flash, etc. that gives information or tells people what to do: Flashing lights on a parked car usually signal a warning ( to other drivers ). He signaled left, and turned the truck slowly. He was signaling (= giving a signal) with a red flag. She signaled for help.

  3. signal 1. As applied to electronics, any transmitted electrical impulse. 2. Operationally, a type of message, the text of which consists of one or more letters, words, characters, signal flags,...

  4. A signal is a gesture or message that people use to communicate with each other. The wave you give a good friend to call her over from across the room and the impulse that transmits your voice through the telephone to your mother are both signals. In the course of a single day, you probably send and receive thousands of different signals.

  5. Aug 30, 2022 · Definition. A signal, formally defined as a function of one or more variables, conveys information about the nature of a physical phenomenon. In simple terms, we can define a signal as any physical quantity that changes with time, distance, speed, position, pressure, temperature, or some other quantity.

  6. noun. : a motion or gesture by which a thought is expressed or a command or wish made known. also : one of two characters + and − that form part of the symbol of a number and characterize it as positive or negative. : something material or external that stands for or signifies something spiritual.

  7. A signal is an electrical or electromagnetic current that is used for carrying data from one device or network to another. It is the key component behind virtually all: Communication Computing Networking Electronic devices A signal can be either analog or digital. Advertisement Techopedia Explains Signal

  8. Nov 11, 2018 · Police signal codes and 10 codes are a system of numbers used together that represent specific activities or conditions and are usually transmitted by voice over the radio or used in mobile computer systems. The codes are typically transmitted from a dispatching center or dispatch (a central communications center) to officers in the field.

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