Anomaloscope
noun ·Rare ·Advanced level
Definitions
- 1 An instrument used to test for color blindness by measuring quantitative and qualitative anomalies in color perception.
"The anomaloscope contains a red-green scale from which may be read a number that is proportional to the amount of red in the mixture field, and a Y scale from which is read a number proportional to the luminance of the test color. In testing an observer, the examiner notes the scale values, which then are available for further transformation as noted for the Nagel anomaloscope."
Example
More examples"The anomaloscope contains a red-green scale from which may be read a number that is proportional to the amount of red in the mixture field, and a Y scale from which is read a number proportional to the luminance of the test color. In testing an observer, the examiner notes the scale values, which then are available for further transformation as noted for the Nagel anomaloscope."
Etymology
From German Anomaloskop, from Ancient Greek ἀνώμαλος (anṓmalos, “irregular, uneven”) (from Ancient Greek ᾰ̓- (ă-, “a-, prefix meaning ‘not’”) + ὁμᾰλός (homălós, “even, level”)) + σκοπέω (skopéō, “to look, to look at; to examine, to inspect”) (from Proto-Indo-European *sḱop, ultimately from *speḱ- (“to see; to look, to observe”)).
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.