drop a tear ( synonym found)

Definition of drop a tear:

(n) : a unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters; any lens system, such as a telescope

Definition of drop a tear:

(n) : a unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters; any lens system, such as a telescope

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