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Webster 1913 Edition

Noun.

The process or art of fixing coloring matters permanently and uniformly in the fibers of wool, cotton, etc.

ppr.

Staining; giving a new and permanent color.

Noun.

The art or practice of giving new and permanent colors; the art of coloring cloth, hats, &c.

dyeing

dyeing ‎(plural dyeings)

The act by which something is dyed.
- 1930, United States. National Bureau of Standards, Bureau of Standards journal of research (volume 3, page 50)
  Ninety per cent of the dyeings on silk, 72 per cent of the dyeings on rayon, 70 per cent of the dyeings on cotton showed no color change.