Meaning

noun a plant consisting of one or more buildings with facilities for manufacturing

originProbably from factor + -y, although in noun sense 1 (“a place where manufacturing takes place”) apparently influenced strongly by association with Classical Latin fact-, the past participial stem of faciō (“to make”); compare manufactory and Latin factōrium (“an oil press”). In noun sense 8 (“a trading establishment”), originally after Portuguese feitoria. In noun sense 9 (“an invoice or…

Etymology from Wiktionary, CC BY-SA 3.0