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Dialytic

Having the quality of unloosing or separating. Dialytic telescope, an achromatic telescope in which the coloured dispersion produced by a single object lens of crown glass is corrected by a smaller concave lens, or combination of lenses, of high dispersive power, placed at a distance in the narrower part of the converging cone of rays, usually near the middle of the tube.

Origin: gr, fr. See dialysis.