Definify.com
Webster 1913 Edition
Erector
E-rec′tor
,Noun.
1.
One who, or that which, erects.
2.
(Anat.)
A muscle which raises any part.
3.
(Physics)
An attachment to a microscope, telescope, or other optical instrument, for making the image erect instead of inverted.
Webster 1828 Edition
Erector
ERECT'OR
,Noun.