膨 — Swell / Get Fat / Thick

Master (高手)ぼう, ふく

Radical ⾁ · radical 130 The building block this kanji is filed under

膨 (readings: ぼう, ふく; Japanese kanji) means “Swell / Get Fat / Thick”. It is a Jōyō kanji taught in Japanese secondary school (junior & senior high) — the 高手 · Master tier beyond the grade 1–6 Kyōiku set, and appears in words such as 膨張 (expansion).

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What does 膨 mean?

Full details, readings & example

Kanji	膨
Meaning	Swell / Get Fat / Thick
Readings	ぼう, ふく
Grade	Master (高手 · secondary school)
Curriculum	Jōyō kanji · Japanese secondary school (JLPT N1–N2)
Example	膨張 (expansion)

How to read 膨

膨 is read ぼう or ふく depending on the word.

Words with 膨

膨張giãn nở

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Updated: 2026-07-22