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tot up
total
total cost accounting
total debt-to-total assets
total eclipse
total factor productivity
total football
total heat
total internal reflection
total quality management
total recall
total reflection
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total internal reflection
to·tal in·ter·nal re·flec·tion


noun 
Definition:
 
reflection of light ray: the complete reflection of a light ray at the boundary of the medium in which it is traveling, when the angle of incidence exceeds the critical angle
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