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aperture card
aperture priority
aperture stop
Apex
apex
Apgar score
aphaeresis
aphagia
aphakia
aphanite
aphasia
aphelandra
aphelion
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aphesis
aphid
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aphakia
a·pha·ki·a [ ə fáykee ə ]


noun 
Definition:
 
absence of lens in eye: a medical condition in which the internal crystalline lens of the eye is absent
[Mid-19th century. <a3 + Greek phakos "lentil," because of the lens's shape]
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