noun
contraction
kun-TRAK-shun/kənˈtrækʃn/
A shortening or reduction in extent.
The biceps undergoes contraction, becoming shorter and thicker as the elbow bends.
Etymology
The pieces express the action of “drawing together.” In the bodily sense, this is the shortening or tightening of muscle or tissue as its parts draw together.
In context
It begins with an involuntary spasm or sudden contraction of the diaphragm, the large dome-shaped muscle below our lungs that we use to inhale air.
More examples
- Each contraction of the muscle pulls on the attached tendon.
- The factory cuts jobs during a contraction in demand.
- "We're" is a contraction of "we are."
Forms
contraction · contractions
contract verb — To become smaller or make something smaller.
Similar words
- reduction
- A broader term for any decrease in size or amount.
- shrinkage
- Often emphasizes material becoming smaller or supplies being lost.
- shortening
- Specifically emphasizes a decrease in length or duration.