pivot joint
- noun
- /ˈpɪvət dʒɔɪnt/
- Specialized
:
articulación pivotante
- A pivot joint allows your forearm to turn palm up or palm down.
Examples
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Rotational movement in the arm is made possible by the pivot joint between the radius and ulna.
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The atlantoaxial joint in the neck is a classic example of a pivot joint.
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What is a pivot joint?
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The pivot joint allows for rotation.
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A pivot joint allows your forearm to turn palm up or palm down.
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The pivot joint between the first and second vertebrae enables the head to rotate from side to side.
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In your body, the pivot joint helps with the twisting motion of your neck.
Synonyms
A joint in the body that lets a bone turn only around one straight line
A connection between two parts that lets one part turn around a single straight line like in the forearm
A joint that lets one bone rotate around another, like in the forearm
How Rotatable
- Specialized
1
4.1
- Specialized
- Specialized
1
4.3
Surface Forms
Morphology
The meaning 'a joint allowing rotation around a single axis' is directly and compositionally derived from 'pivot' (a turning movement) combined with 'joint' (a point where bones articulate). This regular noun–noun compounding follows standard compositional patterns and has clear cross-linguistic parallels, so a B1 learner who knows the constituents can infer the MWE meaning.
Etymology
The name pivot joint comes from a simple machine image: a pivot is a pin or point that lets something turn, and a joint is where two parts meet. So a pivot joint is a place where one bone can turn around one point, which is why it only allows 'turning' movement.