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Webster 1913 Edition

Dilator

Di-lat′or

,
Noun.
[See
Dilate
.]
1.
One who, or that which, widens or expands.
2.
(Anat.)
A muscle that dilates any part.
3.
(Med.)
An instrument for expanding a part;
as, a urethral
dilator
.

Webster 1828 Edition

Dilator

DILATOR

,
Noun.
That which widens or expands; a muscle that dilates.

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