Definition of idiopt in English:

idiopt

noun

rare, historical
  • W. Whewell's term for: a person who is colour-blind.

Origin

Mid 19th century; earliest use found in William Whewell (1794–1866), college head and writer on the history and philosophy of science. From ancient Greek ἴδιος peculiar + -οπτος, used in words relating to sight. Perhaps compare earlier epopt.

Pronunciation

idiopt

/ˈɪdɪɒpt/