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lact-

French, prefix

lact- is spelled L-A-C-T (4 letters). Lact- is a French prefix meaning “lact-” (English Wiktionary, September 2026). The French Wiktionary (Wiktionnaire) defines it as “Préfixe exprimant le lait, qui sert entre autres à composer des termes scientifiques”.

What does lact- mean in English?

prefix

  1. 1

    lact-

Source: English Wiktionary, French section, dump of September 2, 2026 (CC BY-SA 4.0).

How French dictionaries define it

prefix: 1. Préfixe exprimant le lait, qui sert entre autres à composer des termes scientifiques.

The definition in the French Wiktionary (Wiktionnaire), in French.

Source: French Wiktionary (Wiktionnaire), dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.

Forms of lact-

  • lacto- alternative
  • lacti-

Source: English Wiktionary and French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026).

What to look up after lact-