Definition of lactivism in US English:

lactivism

noun

  • Strong advocacy of breastfeeding (sometimes used with negative connotation, suggesting an uncompromising approach)

    ‘the rally is only the most visible example of a recent wave of lactivism’

Origin

Early 21st century: blend of lactation and activism, on the model of lactivist.

Pronunciation

lactivism

/ˈlaktəˌvizəm//ˈlæktəˌvɪzəm/