English noun: optical instrument | |||
1. | optical instrument (artifact) an instrument designed to aid vision | ||
Broader (hypernym) | instrument | ||
Narrower (hyponym) | binoculars, esophagoscope, eyeglasses, field glasses, glasses, jeweler's glass, oesophagoscope, opera glasses, periscope, prism spectroscope, projector, sights, specs, spectacles, spectroscope | ||
Part holonym | lens, lens system, lense | ||