Quadral 7: Sign of the Times Medium

One word:

  1. It is used in technology or engineering to describe function, signal, or communication.
  2. It can be expressed using a symbol.
  3. It is used to describe culture.
  4. (Twist) It must be quiet: a mute signal, silent gesture, or unspoken cue.

AI will judge if your word fits—and if it's better than the AI's answer.

Need a hint?

The AI answer rhymes with a bovine.