milk sugar

noun

: lactose

Examples of milk sugar in a Sentence

Recent Examples on the Web

These bacteria ferment milk sugar, or lactose, into flavor compounds and organic acids, which give the butter a mild tang and complex flavor. — Rosemary Trout, The Conversation, 10 June 2026

Lactose intolerance is caused by a lack of the enzyme lactase, leading to digestive symptoms when the body cannot break down milk sugar. — Allison Forsyth, Health, 15 Apr. 2026

Word History

First Known Use

1846, in the meaning defined above

Kids Definition

milk sugar

noun

: lactose

Medical Definition

milk sugar

noun

: lactose