乳児

1. Origins, structure, and basic meaning

• Structure: Spelling: 乳児. Reading: にゅうじ. Core meaning: infant.
• Basic usage: Representative examples: 乳児を抱く前に手をきれいに洗った / この部屋には乳児用の椅子が用意されている.

2. Common pitfalls and similar expressions

• An age category
  • 乳児 is an age-category noun for a very young child in infancy. In a compound such as 乳児用, it modifies the following noun to mean intended for infants.