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Table of Contents -- collimate
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HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY
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collimate

 : 
Verb (transitive)
 : 
col=li=mate

WORDNET DICTIONARY

Verb collimate has 2 senses

CIDE DICTIONARY

collimatev. t. [See Collimation.].
     To render parallel to a certain line or direction; to bring into the same line, as the axes of telescopes, etc.; to render parallel, as rays of light.  [1913 Webster]
Collimating eyepiece, an eyepiece with a diagonal reflector for illumination, used to determine the error of collimation in a transit instrument by observing the image of a cross wire reflected from mercury, and comparing its position in the field with that of the same wire seen directly. -- Collimating lens (Optics), a lens used for producing parallel rays of light.

OXFORD DICTIONARY

collimate, v.tr.
1 adjust the line of sight of (a telescope etc.).
2 make (telescopes or rays) accurately parallel.

Derivative
collimation n.
Etymology
L collimare, erron. for collineare align (as COM-, linea line)
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