noun🔗ShareA 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."My new glasses have a power of -2 dioptres to correct my nearsightedness. "medicinephysicssciencetechnicalunitChat with AIVocabulary GamePractice Reading
noun🔗ShareThe dioptre adjustment mechanism of a pair of binoculars.""My new glasses have a +2.5 dioptre correction for nearsightedness." "technologydeviceChat with AIVocabulary GamePractice Reading
noun🔗ShareAny lens system, such as a telescope."The optician adjusted the dioptre on the examination machine to accurately measure my eyesight. "physicstechnologydeviceChat with AIVocabulary GamePractice Reading
noun🔗ShareA theodolite or similar surveyor’s angle measuring device."The surveyor used the dioptre to carefully measure the angles for the new building's foundation. "technologydevicescienceChat with AIVocabulary GamePractice Reading
noun🔗ShareAn alidade."The ancient surveyor used the dioptre to precisely measure the angles of the land. "sciencephysicstechnicalChat with AIVocabulary GamePractice Reading
noun🔗ShareA surgical speculum."The doctor used a dioptre to examine the patient's ear canal. "medicinedeviceChat with AIVocabulary GamePractice Reading
noun🔗ShareAn instrument for drawing the skull by projections."The anthropologist used a dioptre to create precise skull drawings for her research on ancient populations. "anatomymedicinedeviceChat with AIVocabulary GamePractice Reading
