熵

熵	U+71B5, 熵 CJK UNIFIED IDEOGRAPH-71B5

Translingual

Han character

熵 (Kangxi radical 86, 火+11, 15 strokes, cangjie input 火卜金月 (FYCB), four-corner 9082₇, composition ⿰火商)

References

Kangxi Dictionary: not present, would follow page 681, character 14
Hanyu Da Zidian (first edition): volume 3, page 2229, character 14
Unihan data for U+71B5

Chinese

trad.		熵
simp. ^#		熵

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熵

Glyph origin

Ideogrammic compound (會意／会意) and phono-semantic compound (形聲／形声) : semantic 火 (“fire”) + phonetic 商 (shāng, “quotient”)

Coined by Chinese physical scientist Hu Gangfu in 1923 to translate the concept of entropy in thermodynamics, where 商 (shāng, “quotient”) represents the quotient of heat and temperature, and 火 (huǒ, “fire”) represents its relation to thermodynamics.

Pronunciation

Mandarin
(Pinyin): shāng (shang¹)

(Zhuyin): ㄕㄤ
Cantonese (Jyutping): soeng¹
Hakka (Sixian, PFS): sông
Eastern Min (BUC): siŏng
Southern Min (Hokkien, POJ): siong
Wu (Shanghai, Wugniu): ¹saon

Mandarin
- (Standard Chinese)⁺
  - Hanyu Pinyin: shāng
  - Zhuyin: ㄕㄤ
  - Tongyong Pinyin: shang
  - Wade–Giles: shang¹
  - Yale: shāng
  - Gwoyeu Romatzyh: shang
  - Palladius: шан (šan)
  - Sinological IPA ^(key): /ʂɑŋ⁵⁵/
Cantonese
- (Standard Cantonese, Guangzhou–Hong Kong)
  - Jyutping: soeng¹
  - Yale: sēung
  - Cantonese Pinyin: soeng¹
  - Guangdong Romanization: sêng¹
  - Sinological IPA ^(key): /sœːŋ⁵⁵/
Hakka
- (Sixian, incl. Miaoli and Meinong)
  - Pha̍k-fa-sṳ: sông
  - Hakka Romanization System: song´
  - Hagfa Pinyim: song¹
  - Sinological IPA: /soŋ²⁴/
Eastern Min
- (Fuzhou)
  - Bàng-uâ-cê: siŏng
  - Sinological IPA ^(key): /suoŋ⁵⁵/
Southern Min
- (Hokkien)
  - Pe̍h-ōe-jī: siong
  - Tâi-lô: siong
  - Phofsit Daibuun: siofng
  - IPA (Xiamen): /siɔŋ⁴⁴/
  - IPA (Quanzhou): /siɔŋ³³/
  - IPA (Zhangzhou): /siɔŋ⁴⁴/
  - IPA (Taipei): /siɔŋ⁴⁴/
  - IPA (Kaohsiung): /siɔŋ⁴⁴/
Wu
- (Northern: Shanghai)
  - Wugniu: ¹saon
  - MiniDict: saon^平
  - Wiktionary Romanisation (Shanghai): ¹saan
  - Sinological IPA (Shanghai): /sɑ̃⁵³/

Definitions

熵

(physics, information theory, etc.) entropy

Derived terms

信息熵 (xìnxī shāng)
熵增
熵減／熵减
資訊熵／资讯熵 (zīxùn shāng)