Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An instrument that is used for measuring ocular refraction.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun An instrument used to
measure ocular refraction , in order toprescribe corrective lenses
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[di(a)– + opt(ic) + –meter.]
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Examples
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