- milk: lactometer
- Chem. lactic acid or lactate: lactobacillus
Origin of lacto-from Classical Latin lac (gen. lactis), milk from Indo-European base an unverified form glak- from source galactic
- Milk: lactoprotein.
- Lactose: lactase.
- Lactic acid: lactate.
Origin of lacto-From Latin lac lact- milk ; see melg- in Indo-European roots.