Meaning

• A very short period of time; a moment.

  "She paused for only an instant, which was just enough time for John to change the subject."

• A single, usually precise, point in time.

  "The instant the alarm went off, he fled the building."

• A beverage or food which has been pre-processed to reduce preparation time, especially instant coffee.

Meaning

• A camera that uses self-developing film to create a chemically developed print shortly after the photograph is taken.