Dictionary/乳児にゅうじNyuuji乳児 (Nyuuji) is a Japanese noun meaning “infant (below 1 year old), suckling baby”.Meaningsnouninfant (below 1 year old); suckling babyKanji in 乳児乳milk児newborn babeRelated words子child児童children掏摸pickpocket牛乳(cow's) milk迷子lost child園児kindergarten pupil乳milk育児childcare小児young child胎児fetus遺児orphan孤児orphan