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Added 10 October 2026

lactose

/ˈlæk.təʊs/ noun

In Latin: lactosum Coined: a coined word, by Marcelin Berthelot Wiktionary

noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about lactose at Wordnik → Where our words come from →

The disaccharide sugar of milk and dairy products, C12H22O11, a product of glucose and galactose used as a food and in medicinal compounds.

Origin

Borrowed from French lactose, from Latin lac (“milk”) + -ose (derivation of glucose). Coined by French chemist Marcelin Berthelot.

From Wiktionary, via Kaikki.org (CC BY-SA)

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