Definitions

1. noun

A person who watches or sees something, especially an event or situation.

“The tourists served as observers to the historic reenactment.”

2. verb

To watch or see something, especially an event or situation.

“The scientists are going to observe the behavior of the animals.”

3. noun

A device or system that measures or records something, especially a physical phenomenon.

“The weather observer accurately predicted the storm.”

4. noun

A person who attends a meeting or a court as a representative of a particular organization or interest.

“The union observer spoke out in favor of the workers’ rights.”

5. noun

A part of a machine or a system that transmits or receives signals.

“The engineer adjusted the observer on the antenna to receive the signal.”