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Webster 1913 Edition
Camera lucida
‖
Cam′e-ra lu′ci-da
.[L.
camera
chamber + L. lucidus
, lucida
, lucid, light.] (Opt.)
An instrument which by means of a prism of a peculiar form, or an arrangement of mirrors, causes an apparent image of an external object or objects to appear as if projected upon a plane surface, as of paper or canvas, so that the outlines may conveniently traced. It is generally used with the microscope.