烯

烯 U+70EF, 烯 CJK UNIFIED IDEOGRAPH-70EF ← 烮 [U+70EE] CJK Unified Ideographs 烰 → [U+70F0]

Translingual

Han character

烯 (Kangxi radical 86, 火+7, 11 strokes, cangjie input 火大大月 (FKKB), four-corner 9482₇, composition ⿰火希)

References

• Kangxi Dictionary: page 671, character 10
• Dai Kanwa Jiten: character 19037
• Dae Jaweon: page 1080, character 7
• Hanyu Da Zidian (first edition): volume 3, page 2205, character 4
• Unihan data for U+70EF

Chinese

trad.		烯
simp. #		烯

Glyph origin

Phono-semantic compound (形聲／形声) : semantic 火 (“fire”) + phonetic 希, the latter being derived from 稀 (xī, “rare”) of which it is the phonetic element. This is coined in light of the observed lack of hydrogens (as compared to alkanes) in alkenes and the fact that alkenes are flammable.

Compare 烷 (wán, “alkane”), 炔 (quē, “alkyne”).

Pronunciation

• Mandarin

  (Pinyin): xī (xi¹)

  (Zhuyin): ㄒㄧ

• Cantonese (Jyutping): hei¹

---

• Mandarin
  • (Standard Chinese)⁺
    • Hanyu Pinyin: xī
    • Zhuyin: ㄒㄧ
    • Tongyong Pinyin: si
    • Wade–Giles: hsi¹
    • Yale: syī
    • Gwoyeu Romatzyh: shi
    • Palladius: си (si)
    • Sinological IPA ^(key): /ɕi⁵⁵/
• Cantonese
  • (Standard Cantonese, Guangzhou–Hong Kong)⁺
    • Jyutping: hei¹
    • Yale: hēi
    • Cantonese Pinyin: hei¹
    • Guangdong Romanization: héi¹
    • Sinological IPA ^(key): /hei̯⁵⁵/

Definitions

烯

1. (organic chemistry) alkene

Compounds

• 丁烯 (dīngxī)
• 三氯乙烯 (sānlǜyǐxī)
• 丙烯 (bǐngxī)
• 乙烯 (yǐxī)
• 氯乙烯 (lǜyǐxī)
• 烯烴／烯烃 (xītīng)
• 烯胺 (xī'àn)
• 烯醇 (xīchún)
• 環戊二烯／环戊二烯 (huánwù'èrxī)
• 聚丙烯 (jùbǐngxī)
• 聚乙烯 (jùyǐxī)
• 聚苯乙烯 (jùběnyǐxī)
• 苯乙烯 (běnyǐxī)
• 蒎烯 (pàixī)
• 薴烯／苧烯 (níngxī)