What it means
The root in words about milk. Lactation is making breast milk, lactose is the sugar in milk, and prolactinproh-LAK-tinA hormone made by the pituitary gland that tells the breasts to make milk.pro- forlact/o milk-in substanceFull entry is the hormone that tells the breasts to make milk. Lactic acid (lactateLAK-taytA substance made when cells break down glucose for energy; its blood level is a common lab test.lact/o milk (lactic acid was first found in sour milk)-ate a salt of an acidFull entry ) got its name because it was first found in sour milk.
At a glance
| Also written | lacto- |
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