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Definition of rotator

rotator

/ˈroʊˌteɪtər/
ro · ta · tor
Plural:rotators
•
Adjective:rotatory
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rotator Lexical Profile

rotator Game Scores & Validity

• noun

1

A muscle whose contraction produces a circular or revolving movement of a bone, limb, or organ around its axis.

Example

"The physical therapist prescribed gentle exercises to strengthen the injured rotator muscles in his shoulder."

2

A mechanical device or apparatus used to turn or revolve an object, such as a directional antenna, laboratory sample, or heavy load.

Example

"The amateur radio operator installed a motorized rotator on the roof to adjust the direction of the antenna."

Synonyms
View all synonyms for rotator

• Nearby Words

rotation
rotational
rotationally
rotator
rote
rotgut
roti

Word Origin & Etymology

Borrowed in the mid-17th century from Latin rotator ('one who turns or revolves'), an agent noun derived from rotare ('to turn around in a circle'), from rota ('wheel').

Cite this Entry

Wordmom. (2026). Definition of Rotator. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/rotator
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