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colliflower | colligate | colligation | collimate | collimation | collimator | collin | colline | collinear | collineation | colling




  •  A telescope arranged and used to determine errors of collimation, both vertical and horizontal.  Nichol.  [1913 Webster]
  •  A tube having a convex lens at one end and at the other a small opening or slit which is at the principal focus of the lens, used for producing a beam of parallel rays; also, a lens so used.  [1913 Webster]


collimator, n.
1 a device for producing a parallel beam of rays or radiation.
2 a small fixed telescope used for adjusting the line of sight of an astronomical telescope, etc.

For further exploring for "collimator" in Webster Dictionary Online

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