Lactose
7 lettersnouncommonUpdated June 2026
Definition
A disaccharide sugar found naturally in milk, composed of a glucose molecule bonded to a galactose molecule.
“She avoided all dairy after discovering she was intolerant to lactose.”
Pronunciation
IPA
/ˈlæk.təʊs/
Syllables
lac·tose
Related Words
Synonyms
Word Game Tips
Wordle
Contains the LACT prefix and ends in OSE, a common sugar-name suffix that helps narrow guesses
Scrabble
Scores 9 points, the OSE ending is a recognised hook pattern for chemical and sugar-related words
Words Related to Lactose
Words one letter different
Change a single letter of “lactose” to make these 7-letter words — useful for Wordle and crossword clues.
Explore Similar Words
Try These Tools
Dictionary References
Look up lactose in an authoritative dictionary for full definitions, pronunciation, and etymology.

Ready to test your word skills?
Download Word Challenge for unlimited word puzzles, a fresh Daily Challenge, and head-to-head multiplayer. Guess the hidden word in six tries or fewer!