Daltonic

• daltonic (especially the colour blind sense)

From Dalton +‎ -ic.

Daltonic (not comparable)

1. Of or pertaining to the chemist John Dalton, Daltonian.
   • 1866, John Henry Pepper, The Playbook of Metals: A New Edition, page 150,

     All our ideas are so interwoven with the Daltonic theory that we cannot transform ourselves into the times when it did not exist.

   • 1875 October 8, S. E. Phillips, The Atomic Weight of the Cerium Metals, William Crooke (editor), The Chemical News, Volume 31: 1875, page 176,

     It seems to me a cardinal point with many to consider the elements as blank units which may be played with numerically; they coldly and grudgingly accept the Daltonic proportions, and seem to consider it immaterial whether an element be xCl, or x₂Cl₂, or x₃Cl₃, excepting as far as volume or specific heat may determine.

   • 1906, The Messenger, page 32,

     An “ion” is an atom of matter—I mean a Daltonic atom; hydrogen, for example—with such an electron attached to it, or detached from it.

2. Colour blind, especially red-green colour blind.
   • 1982, R. Fletcher, Childrens' Tests - Further Applications, G. Verriest (editor), Colour Vision Deficiencies, Volume 6, page 189,

     Using three tests, bridge', 'differences and 'mosaic', can be as rapid as 1 minute per test but a child slightly Daltonic on PIC may give positive results on only two of the three; which two, cannot be predicted.

   • 1983, Rimvydas Šilbajoris, Mind Against the Wall: Essays on Lithuanian Culture Under Soviet Occupation‎, page 109:

     Here we see the very same restrictions, the same blind — and at best Daltonic — policies of the ideological leaders.

   • 1994, Olga Bicos, More Than Magic‎, page 298:

     " […] I have a cousin with Daltonic vision; it's not so strange in a man not to see the color red."

• anticold