# 平方
## Chinese
### Pronunciation

* Mandarin
    (Pinyin): píngfāng
    (Zhuyin): ㄆㄧㄥˊ ㄈㄤ
* Cantonese
    (Guangzhou–Hong Kong, Jyutping): ping$^4$ fong$^1$
    (Taishan, Wiktionary): pen$^3$ fong$^1$ / pen$^3$ fong$^{1*}$
* Southern Min
    (Hokkien, POJ): pêng-hong
    (Teochew, Peng'im): pêng$^5$ huang$^1$
* Mandarin
** (Standard Chinese)
*** Hanyu Pinyin: píngfāng
*** Zhuyin: ㄆㄧㄥˊ ㄈㄤ
*** Tongyong Pinyin: píngfang
*** Wade–Giles: pʻing$^2$-fang$^1$
*** Yale: píng-fāng
*** Gwoyeu Romatzyh: pyngfang
*** Palladius: пинфан (pinfan)
*** Sinological IPA : /pʰiŋ³⁵ fɑŋ⁵⁵/
* Cantonese
** (Standard Cantonese, Guangzhou–Hong Kong)
*** Jyutping: ping$^4$ fong$^1$
*** Yale: pìhng fōng
*** Cantonese Pinyin: ping$^4$ fong$^1$
*** Guangdong Romanization: ping$^4$ fong$^1$
*** Sinological IPA : /pʰɪŋ²¹ fɔːŋ⁵⁵/
** (Taishanese, Taicheng)
*** Wiktionary: pen$^3$ fong$^1$ / pen$^3$ fong$^{1*}$
*** Sinological IPA : /pʰen²² fɔŋ³³/, /pʰen²² fɔŋ³³⁻³³⁵/
* Southern Min
** (Hokkien)
*** Pe̍h-ōe-jī: pêng-hong
*** Tâi-lô: pîng-hong
*** Phofsit Daibuun: penghofng
*** IPA (Xiamen): /piɪŋ²⁴⁻²² hɔŋ⁴⁴/
*** IPA (Quanzhou): /piɪŋ²⁴⁻²² hɔŋ³³/
*** IPA (Zhangzhou): /piɪŋ¹³⁻²² hɔŋ⁴⁴/
*** IPA (Taipei): /piɪŋ²⁴⁻¹¹ hɔŋ⁴⁴/
*** IPA (Kaohsiung): /piɪŋ²³⁻³³ hɔŋ⁴⁴/
** (Teochew)
*** Peng'im: pêng$^5$ huang$^1$
*** Pe̍h-ōe-jī-like: phêng huang
*** Sinological IPA : /pʰeŋ⁵⁵⁻¹¹ huaŋ³³/

### Noun

平方
* (arithmetic) square (as in square foot, square mile, square root); second power
    From: 1088 CE, Shen Kuo, Dream Pool Essays
    Yòng jiǎn xián wài, yǒu shíliù, kāi píngfāng, chú dé sì bù wèi gōu, bèi zhī wèi suǒ gē zhíjìng. [Pinyin]
    (please add an English translation of this usage example)

#### Derived terms

* 平方公尺 (píngfāng gōngchǐ)
* 平方公里 (píngfāng gōnglǐ)
* 平方千米
* 平方呎 (píngfāngchǐ)
* 平方根 (píngfānggēn)
* 平方米 (píngfāngmǐ)
* 平方英呎
* 平方釐米

#### Descendants

* → Japanese: 平方(へいほう) (heihō)
* → Korean: 평방(平方) (pyeongbang)
* → Vietnamese: bình phương (平方)

#### See also

* 立方 (lìfāng)
* 乘方 (chéngfāng)
* 開方／开方 (kāifāng)

### Classifier

平方
* (chiefly Mainland China) Short for 平方米 (píngfāngmǐ, “square metre”).

#### Synonyms

| Variety | Location | Words |
| Formal (Written Standard Chinese) | Formal (Written Standard Chinese) | 平方米, 平方公尺 |
| Northeastern Mandarin | Taiwan | 平方公尺 |
| Northeastern Mandarin | Singapore | 平方米 |
| Southwestern Mandarin | Wuhan | 平方 |
| Cantonese | Guangzhou | 平方 |
| Cantonese | Hong Kong | 平方米, 平方公尺 |
| Cantonese | Taishan | 平方米 |
| Southern Min | Xiamen | 平方 |
| Southern Min | Zhao'an | 平米 |
| Wu | Shanghai | 平方 |
| Wu | Wenzhou | 平方 |

## Japanese

Kanji in this term :
| 平 | 方 |
| へい Grade: 3 | ほう Grade: 2 |
| kan'on | on'yomi |

### Etymology

Probably from Chinese 平方 (píngfāng, literally "flat square", "flat" because it accounts for 2 dimensions only). Compare 立方 (rippō, “cube”, literally "standing square", accounting for the third dimension).
First attested in Japanese in a text from 1875.

### Pronunciation

* (Tokyo) へーほー [hèéhóó] (Heiban – [0])
* IPA: [he̞ːho̞ː]

### Noun

平(へい)方(ほう) • (heihō)
* [from 1886] (mathematics) the second power of a number etc., square
* [from 1875] a square area
    １０００(いっせん) 平方(へいほう)メートル
       issen heihō mētoru
       1,000 square meters

#### Coordinate terms

* (mathematics): 立方(りっぽう) (rippō): third power, cube
* (mathematics): 乗(じょう) (jō): -power, as in nth power
* (area): 平米(へいべい) (heibei): a square meter
* (volume): 立米(りゅうべい) (ryūbei): a cubic meter

#### Derived terms

* 平方形(へいほうけい) (heihōkei): a square, a square shape
* 平方根(へいほうこん) (heihōkon): a square root

### References

* ↑ Shōgaku Tosho (1988) 国語大辞典（新装版） [Unabridged Dictionary of Japanese (Revised Edition)] (in Japanese), Tōkyō: Shogakukan, →ISBN
* ↑ Matsumura, Akira, editor (2006), 大辞林 [Daijirin] (in Japanese), Third edition, Tokyo: Sanseidō, →ISBN

## Korean

Hanja in this term :
| 平 | 方 |

### Noun

平方 • (pyeongbang) (hangeul 평방)
* hanja form of 평방 (“square”)

## Vietnamese

chữ Hán Nôm in this term :
| 平 | 方 |

### Noun

平方
* chữ Hán form of bình phương (“square”).

### Adjective

平方
* chữ Hán form of bình phương (“squared”).