瞳・眸|ひとみhitomi[0]heiban (flat)

1. nounpupil (of the eye)
   瞳ひとみは日ひのあたる所ところでは収縮しゅうしゅくする。↗

   The pupils of the eyes contract in sunlight.
2. nounone's eyes
   あなたの瞳ひとみに、吸い込すいこまれそう！↗

   I feel like I'm being drawn into your eyes.

• Synonym瞳孔どうこうNeutralThe neutral medical term for the pupil of the eye. 「瞳」 carries a literary feel, as in 「澄んだ瞳」.
• Synonym眸子ぼうしWrittenWritten, archaic-flavoured word for the pupil. In everyday speech 「瞳」 is the natural choice.
• Related瞳子どうしWrittenA written but rarely used word for the pupil; 「瞳」 is what people normally say.

Say 「瞳」 for the eyes in everyday and literary contexts, as in 「瞳を輝かせる」. Use 「瞳孔」 in medical settings. 「眸子」 is archaic written prose and 「瞳子」 is rare — learners should stick with 「瞳」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 脊椎動物せきついどうぶつ及および軟体動物なんたいどうぶつ頭足類とうそくるいの目めにおいて、眼めの内側うちがわに入はいる光ひかりの量りょうを調節ちょうせつする大おおきさ可変かへんの黒くろい円形えんけいの開口部かいこうぶ。
2. （換喩かんゆ）目め。
3. 開口かいこう絞しぼりを通とおして見みえる像ぞう。