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The Collaborative International Dictionary
Conciator

Conciator \Con"ci*a`tor\, n. [It. conciatore, fr. conciare to adjust, dress, fr. L. comtus, p. p. See Compt, a.] (Glass Works) The person who weighs and proportions the materials to be made into glass, and who works and tempers them. [1913 Webster] ||

Wiktionary
conciator

n. (context glassworking English) The person who weighs and proportions the materials to be made into glass, and who works and tempers them.