noun
Refers to the powdered or liquid milk substitute for infants, as opposed to breast milk.
赤ちゃんに人工ミルクをあげる時間です。
It's time to give the baby formula.
noun
bottle-feeding
Refers to the act or practice of feeding a baby with formula from a bottle, often contrasted with breastfeeding.
母乳が出ないので、人工ミルクに切り替えました。
Since I couldn't produce breast milk, I switched to bottle-feeding.