lact-

combining form

variants or lacti- or lacto-

1

: milk

lactoglobulin

2

a

: lactic acid

lactate

b

: lactose

lactase

Word History

Etymology

French & Latin; French, from Latin, from lact-, lac — more at galaxy

Cite this Entry

Style

“Lact-.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lact-. Accessed 4 Nov. 2025.

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