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Cone of light -->
pyramid of light
a triangular area at the anterior inferior part of the tympanic membrane, running from the umbo to the periphery, where there is seen a bright reflection of light.
Synonym: cone of light, light reflex, politzers luminous cone, red reflex, Wilde's triangle.
Malacarne's pyramid, a lobule on the undersurface of the cerebellum, the posterior portion of the vermis.