protractatio

protractatio [protractare+-tio] , (act of) producing (image or figure, in quot. w. ref. to work in glass). 1355 vitriario operanti ibidem super ~one diversarum ymaginum pro fenestris vitreis capelle KR Ac 471/6 m. 2; vitriario operanti ibidem super ~one predictarum tabularum Ib.; v vitriariis operantibus ‥ super ~one vitri Ib. m. 3.

protractatio

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