/ˈfæktəri/
[noun] A large building or group of buildings where goods are made in large quantities, usually by machines and many workers working together.
Before factories made goods, a 'factory' was a trading post — the word has nothing to do with making things at all.
The story of 'factory' begins with the Latin verb 'facere', meaning 'to do' or 'to make'. From this root, Latin formed the noun 'factor', meaning 'a doer' or 'an agent' — someone who acts on behalf of another person in business matters. This gave rise to the Medieval Latin 'factorium', a place where a factor, or business agent, operated. The word carried the sense of a commercial station or trading house, not a place of manufacture.
When the word first appeared in English in the early 16th century, it carried exactly this mercantile meaning. A 'factory' was an establishment set up in a foreign country where merchants could live, store goods, and conduct trade. The great trading companies of the age — the East India Company, the Dutch VOC — operated factories across Asia and Africa. The famous 'Factory at Canton' in China, where European merchants were confined and conducted their business with the Chinese Empire, is a classic example of this older meaning still alive well into the 18th century.
The shift in meaning happened gradually, driven by the Industrial Revolution in Britain during the late 18th and early 19th centuries. As large-scale production in purpose-built buildings became more common, the word 'factory' began to attach itself to these new sites of manufacturing. A place where agents once traded goods became a place where workers now made them. The factory floor replaced the counting house, and the smoke of coal replaced the smell of spices.
This semantic drift is not as strange as it first appears. The Latin root 'facere' — to make or to do — was always quietly present in the word, waiting to reassert itself. The same root gave English 'fact' (something done or made), 'manufacture' (from Latin 'manus' meaning hand, combined with 'facere': literally 'made by hand'), and 'artifact' (a thing made by skill, from 'arte' plus 'factum', the past participle of 'facere'). So the modern factory, buzzing with machines making things, is actually a more faithful heir to its Latin ancestor than the quiet trading post it once described.
Today, the word sits at the heart of industrial and economic vocabulary, and has generated rich compound forms: factory floor, factory farming, factory ship, and even the figurative 'factory of ideas'. The word has travelled far — from a Roman agent conducting business, to a merchant's house in colonial Calcutta, to a vast assembly plant stamping out cars by the thousands — and at each stop, it carried within it the ancient human impulse to do, to make, and to trade.