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Eyeglass prescription measurement Crossword Clue

7 letters · New York Times · Wednesday, October 14, 1998 · 29-Across

Appeared in 1 New York Times Crossword: Wednesday, October 14, 1998.

Exact puzzle match · New York Times · October 14, 1998 · 29-Across · 7 letters

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a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists

noun

WordNet® (Princeton University)

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