ENGLISH
REFERENCE

lactation

n.
C1 Advanced US //ɫækˈteɪʃən// UK //læktˈeɪʃən// lac·ta·tion

n. the process of making and releasing milk from the breasts of a mother to feed her baby.

n. the physiological process of milk production and secretion in the mammary glands of female mammals.


SIMPLE

The mother began lactation shortly after giving birth.

CONTEXTUAL

Many mammals have evolved specialized behaviors to ensure their young receive enough milk during the early stages of lactation.

COMPLEX

The transition from pregnancy to lactation involves complex hormonal shifts that prepare the mammary glands for the high-volume secretion required to sustain a growing infant.

Synonyms
Origin

Learned borrowing from Latin lactātiō, lactātiōnis. Equivalent to lactate + -ion.

© 2026 English Reference