noun
action
The way a mechanism moves or responds when used.
The door latch has a smooth, quiet action.
Etymology
Latin agere meant to do or set in motion. A mechanism’s action is its doing: the characteristic movement or response it produces when operated.
More examples
- This piano has a light action that suits beginners.
- A little oil improves the action of the hinges.
- The pump's action forces water through the pipe.
Forms
action · actions
mechanism noun — A set of parts that work together.