DIOPTER
Scrabble letter values: D2I1O1P3T1E1R1 = 10
Definition
- noun a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters. — synonyms: dioptre
Examples
- “used by oculists”
Scrabble letter values: D2I1O1P3T1E1R1 = 10