胎児

• Reading: たいじ
• Romaji: taiji
• Kanji breakdown: 胎 (tai) — womb, embryo; 児 (ji/ni) — child, infant
• Pronunciation: /ta.i.dʑi/

Meaning

Foetus; embryo; unborn baby developing in the womb.

A medical and formal term for an unborn child. Used in medical, legal, and academic contexts rather than casual conversation. Related terms include 胎児診断 (prenatal diagnosis) and 胎児の発育 (foetal development). Distinguished from 赤ちゃん (baby, casual) by its clinical and formal tone.

Examples

1. 定期検診で胎児の成長を確認した。 I confirmed the fetus's development during a regular checkup.
2. 妊娠中の喫煙は胎児に深刻な影響を与える。 Smoking during pregnancy has a serious impact on the fetus.
3. 超音波検査で胎児の心拍が確認できた。 The heartbeat of the fetus was confirmed by ultrasound.

Usage Guide

Context: medical, prenatal care, biology, legal

Tone: clinical

Origin & History

Compound of 胎 (tai, womb/embryo) + 児 (ji, child). Literally 'womb child,' a direct and descriptive term for an unborn baby.

Cultural Context

Era: Modern

Generation: Adults

Social background: Universal