postnatal depressionBrE /ˌpəʊst ˌneɪtl dɪˈpreʃn/ 🔊NAmE /ˌpoʊst ˌneɪtl dɪˈpreʃn/ 🔊 (BrE) (NAmE ˌpost-ˌpartum deˈpression) noun [uncountable] a medical condition in which a woman feels very sad and anxious in the period after her baby is born 产后抑郁（症）