rotation
/ɹoʊˈteɪʃən/
Proposed by a contributor, not yet supported by evidence.
Also seen as: rotations
Sense 1
Meaning · English
The act of turning around a centre or an axis.
Noun
Examples
An extreme version of vorticity is a vortex. The vortex is a spinning, cyclonic mass of fluid, which can be observed in the rotation of water going down a drain, as well as in smoke rings, tornados and hurricanes.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 2
Meaning · English
A single complete cycle around a centre or an axis.
Noun
Examples
Earth's moon completes a rotation every twenty-seven days or so.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “rotation” mean?
The act of turning around a centre or an axis.
Is “rotation” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.