乳 幼 児(にゅうようじ)

にゅうようじ

noun

infants and toddlers; babies and small children

1. infants and toddlers; babies and small children

A collective term for very young children, typically from birth to around age 5 or 6. Combines 乳児(にゅうじ) (infant, roughly 0-1) and 幼児(ようじ) (toddler, roughly 1-6).

乳幼児(にゅうようじ)は入場無料(にゅうじょうむりょう)です。

Infants and toddlers get in free.

乳幼児(にゅうようじ)を連(つ)れての旅行(りょこう)は大変(たいへん)だ。

Traveling with young children is tough.

この薬(くすり)は乳幼児(にゅうようじ)の手(て)の届(とど)かない場所(ばしょ)に保管(ほかん)してください。

Please keep this medicine out of reach of young children.

乳幼児(にゅうようじ) is a compound of 乳児(にゅうじ) (nursing infant, roughly 0-1 years old) and 幼児(ようじ) (young child, roughly 1-6 years old). It is commonly used in official, medical, and public contexts.

Common collocations

乳幼児(にゅうようじ)健診(けんしん) (infant health checkup)
乳幼児(にゅうようじ)突然死(とつぜんし)症候群(しょうこうぐん) (sudden infant death syndrome / SIDS)
乳幼児(にゅうようじ)向(む)け (for infants and toddlers)

Usage

This word is frequently seen on signs, product labels, and in health-related materials. It is more formal and specific than 子供(こども) or 赤(あか)ちゃん. You will encounter it at hospitals, on medicine packaging, and in public facility rules.

Related Words

Related: 乳児(にゅうじ) (nursing infant (0-1))

Related: 幼児(ようじ) (young child (1-6))

Related: 小児科(しょうにか) (pediatrics)

general

Added 2026.3.4 14:26 · Revised 2026.9.4 21:29

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