---
title: "Pengzhang Meaning: 膨胀 (péngzhàng) Means “to expand”"
description: "膨胀 (traditional 膨脹, péngzhàng) means “to expand; to swell”. Hear its tones, see what 膨 and 胀 each mean and a real sentence that uses it."
canonical: "https://mandarinthewild.com/meaning/pengzhang"
published: "2026-10-21"
updated: "2026-11-06"
author: "Mandarin The Wild"
---

[What does it mean in Chinese?](https://mandarinthewild.com/meaning)

# What does 膨胀 mean?

猫头鹰māotóuyīngowl

膨胀 péngzhàng

## to expand; to swell

## It can also mean

- (slang) to get too big for one's boots

## Its characters

1. 膨 péng to swell
2. 胀 zhàng to swell

## In a sentence

气球受热会膨胀。 A balloon expands when heated.

[More about 膨胀](https://mandarinthewild.com/words/%E8%86%A8%E8%83%80)

## Keep 膨胀 for Review

A free account keeps it, and Review brings it back just before you’d forget it.

## Look up another word

## See any word in its sentence

Get a card like this for every word on any page or YouTube subtitle.

[Add to Chrome](https://mandarinthewild.com/go/chrome?from=%2Fmeaning%2Fpengzhang) [Read in the Library](https://mandarinthewild.com/library)

[Turn simplified Chinese into traditional](https://mandarinthewild.com/simplified-to-traditional)

[The best ways to get pinyin on YouTube subtitles](https://mandarinthewild.com/guides/youtube-pinyin-subtitles)