What does lactating mean?
Lactating describes a female mammal that is producing milk, especially for the nourishment of her young. The term is used in veterinary medicine, animal husbandry, biology, and discussions of breastfeeding or milk production. A lactating animal requires additional nutrients and energy because its body is supplying milk, so the condition can affect appetite, weight, health, and reproductive timing. In agriculture, dairy farmers closely monitor lactating animals because their milk yield and milk quality are economically important. The word is also sometimes used more broadly for a body or organ that produces lactate, but its dominant everyday and technical sense concerns milk-producing mammals. While “nursing” can describe the feeding of young at the breast, “lactating” focuses specifically on the physiological production of milk.
Producing milk to feed one's young.
"The sanctuary provides specialized care for pregnant and lactating animals."
Chiefly used of female mammals in biological, veterinary, agricultural, and medical contexts.
Present participle of lactate, meaning to produce and secrete milk.
"The mare continues lactating for several months after the foal is born."
Used intransitively for a female mammal that is producing milk.
In mammals, lactation links birth to nourishment: the young receive their first essential food directly from the mother.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does lactating come from?
Lactating is derived from the Latin verb lactare, meaning “to give milk,” with the connecting suffix -at- and the English present-participle ending -ing. It belongs to a family of words associated with lac, Latin for “milk,” including lactate, lactation, lactic, and lactose. The term entered English in the 19th century and became established in medical and agricultural usage.
Related word forms
How lactating is actually used
Usually used in veterinary, biological, agricultural, and medical contexts. It is not normally used to describe human mothers in ordinary conversation.
Easily confused with lactating
Lactating refers to the ongoing production of milk, whereas lactated more often means having been treated with or converted into lactate.
Lactate is the related verb or noun, while lactating specifically describes the present state of producing milk.