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Webster 1913 Edition


Rotator

Ro-ta′tor

,
Noun.
[L.]
1.
(Anat.)
that which gives a rotary or rolling motion, as a muscle which partially rotates or turns some part on its axis.
2.
(Metal.)
A revolving reverberatory furnace.

Webster 1828 Edition


Rotator

ROTA'TOR

,
Noun.
[L.] That which gives a circular or rolling motion; a muscle producing a rolling motion.