dioptometer en · NOUN
Etymology
Etymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwi- Proto-Hellenic *dwi- Ancient Greek δῐ- (dĭ-)bor. Latin di-bor. English di- Ancient Greek ὀπτός (optós)der. English opto- English -meter English dioptometer From di- + opto- + -meter.
Meanings
- An instrument used to measure ocular refraction, in order to prescribe corrective lenses.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| dioptometers | Number=Plur | lexicographic |