Word.ws English Dictionary

lacto-

lacto- prefix: milk.

Prefix

lacto-

  1. milk.
    Synonyms:
    galacto-, galact-

Synonyms of lacto-

Forms of lacto-

alternative formlact-

Origin of lacto-

Derived from Latin lac (“milk”).

Questions about lacto-

What does lacto- mean?
Lacto- means milk.
What part of speech is lacto-?
Lacto- is a prefix.

Words near lacto- in the dictionary

  1. lactivists
  2. lactivore
  3. lactivores
  4. lactivorous
  5. lacto series
  6. lacto-
  7. lacto-ovo vegetarian
  8. lacto-ovo vegetarians
  9. lacto-ovo-vegetarian
  10. lacto-ovo-vegetarians
  11. lacto-series

Source and license

Adapted from Wiktionary: lacto- (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “lacto-.” Word.ws, https://word.ws/lacto-. Based on Wiktionary, CC BY-SA 4.0.