| rota | (noun) a roster of names showing the order in which people should perform certain duties | - |
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| rotary | (adjective) relating to or characterized by rotation | - |
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| (adjective) describing a circle; moving in a circle | Synonyms: circular, orbitual |
| (noun) a road junction at which traffic streams circularly around a central island | Synonyms: circle, roundabout, traffic circle |
| (noun) electrical converter consisting of a synchronous machine that converts alternating to direct current or vice versa | Synonyms: rotary converter, synchronous converter |
| rotatable | (adjective) capable of being rotated | - |
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| rotate | (verb) plant or grow in a fixed cyclic order of succession | - |
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| (verb) perform a job or duty on a rotating basis | - |
| (verb) cause to turn on an axis or center | Synonyms: circumvolve |
| (verb) turn on or around an axis or a center | Synonyms: go around, revolve |
| (verb) turn outward | Synonyms: splay, spread out, turn out |
| (verb) exchange on a regular basis | - |
| rotated | (adjective) turned in a circle around an axis | Synonyms: revolved |
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| rotation | (noun) the act of rotating as if on an axis | Synonyms: rotary motion |
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| (noun) a planned recurrent sequence (of crops or personnel etc.) | - |
| (noun) a single complete turn (axial or orbital) | Synonyms: gyration, revolution |
| (noun) (mathematics) a transformation in which the coordinate axes are rotated by a fixed angle about the origin | - |
| rotational | (adjective) of or pertaining to rotation | - |
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| rotationally | (adverb) in a rotational manner | - |
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| rotatory | (adjective) of or relating to or characteristic or causing an axial or orbital turn | Synonyms: revolutionary |
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| rotavirus | (noun) the reovirus causing infant enteritis | - |
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