a material once used for color photography, consisting of a photographic emulsion applied over a multicolored screen of minute starch grains dyed red, green, and blue-violet.
Historical Examples

“And so that is the way these autochrome plates we have here were made,” concluded the scientist.
The Boy’s Book of New Inventions Harry E. Maule


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  • Autochthon

    an aboriginal inhabitant. Ecology. one of the indigenous animals or plants of a region. Geology. a geological formation formed in the region where found. Historical Examples He is earth-born, autochthon, and holds possession by descent. The Eulogy of Richard Jefferies Walter Besant autochthon, aw-tok′thon, n. one of the primitive inhabitants of a country: an aboriginal:—pl. […]

  • Autochthonic

    pertaining to autochthons; aboriginal; indigenous (opposed to heterochthonous). Pathology. found in the part of the body in which it originates, as a cancerous lesion. found in a locality in which it originates, as an infectious disease. Psychology. of or relating to ideas that arise independently of the individual’s own train of thought and seem instead […]

  • Autotruck

    a motor truck.

  • Autotype

    facsimile (defs 1, 2). Photography. a process for producing permanent prints in a carbon pigment. a print made by this process. Historical Examples Some are easily accessible in Gerli, Chamberlaine, and the autotype reproductions. Renaissance in Italy Vol. 3 John Addington Symonds Some are in brown, some in blue, reproduced by the autotype Company. The […]

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