Term: twenty-twenty: normal visual acuity, as measured by the ability to read charts at a distance of 20 feet
Broader: acuity: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) | Unrelated: manchu: a member of the Manchu speaking people of Mongolian race of Manchuria; related to the Tungus; conquered China in the 17th century
Broader: acuity: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) | Unrelated: typhoeus: (Greek mythology) son of Gaea and Tartarus who created the whirlwinds; had a terrifying voice and 100 dragon heads that spurted fire
Broader: acuity: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) | Unrelated: big-tree plum: small tree of southwestern United States having purplish-red fruit sometimes cultivated as an ornamental for its large leaves
Broader: acuity: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) | Unrelated: polymer: a naturally occurring or synthetic compound consisting of large molecules made up of a linked series of repeated simple monomers
Broader: acuity: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) | Unrelated: gill arch: one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians
Broader: acuity: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) | Unrelated: webbing: a narrow closely woven tape; used in upholstery or for seat belts
Broader: acuity: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) | Unrelated: mound: (baseball) the slight elevation on which the pitcher stands
Broader: acuity: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) | Unrelated: atomic energy commission: a former executive agency (from 1946 to 1974) that was responsible for research into atomic energy and its peacetime uses in the United States
Broader: acuity: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) | Unrelated: warm-up: exercising in preparation for strenuous activity
Broader: acuity: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) | Unrelated: plantlike flagellate: unicellular organisms having many characteristics of typical algae