不可逆

Chinese

		not; no	reversible
trad. (不可逆)		不	可逆
simp. #(不可逆)		不	可逆

Pronunciation

• Mandarin

  (Pinyin): bùkěnì

  (Zhuyin): ㄅㄨˋ ㄎㄜˇ ㄋㄧˋ

• Cantonese (Jyutping): bat¹ ho² jik⁶

---

• Mandarin
  • (Standard Chinese)⁺
    • Hanyu Pinyin: bùkěnì
    • Zhuyin: ㄅㄨˋ ㄎㄜˇ ㄋㄧˋ
    • Tongyong Pinyin: bùkěnì
    • Wade–Giles: pu⁴-kʻo³-ni⁴
    • Yale: bù-kě-nì
    • Gwoyeu Romatzyh: bukeenih
    • Palladius: букэни (bukɛni)
    • Sinological IPA ^(key): /pu⁵¹ kʰɤ²¹⁴⁻²¹ ni⁵¹/
• Cantonese
  • (Standard Cantonese, Guangzhou–Hong Kong)⁺
    • Jyutping: bat¹ ho² jik⁶
    • Yale: bāt hó yihk
    • Cantonese Pinyin: bat⁷ ho² jik⁹
    • Guangdong Romanization: bed¹ ho² yig⁶
    • Sinological IPA ^(key): /pɐt̚⁵ hɔː³⁵ jɪk̚²/

Adjective

不可逆

1. irreversible

Derived terms

• 不可逆反應／不可逆反应 (bùkěnì fǎnyìng)

 

Japanese

Kanji in this term
不	可	逆
ふ Grade: 4	か Grade: 5	ぎゃく Grade: 5
on’yomi

Etymology

Compound of 不 (fu-, “un-, in-, not”) +‎ 可逆 (kagyaku, “reversibility”).

Pronunciation

• (Tokyo) ふか​ぎゃく [fùkáꜜgyàkù] (Nakadaka – [2])
• IPA^(key): [ɸɯ̟ᵝka̠ɡʲa̠kɯ̟ᵝ]

Noun

不(ふ)可(か)逆(ぎゃく) • (fukagyaku) 

1. irreversibility
2. (information theory) lossiness

Usage notes

In compounds, this term is often treated like an adjective:

不(ふ)可(か)逆(ぎゃく)反(はん)応(のう)

fukagyaku hannō

an irreversible (chemical) reaction

不(ふ)可(か)逆(ぎゃく)圧(あっ)縮(しゅく)

fukagyaku asshuku

lossy compression

However, for use as a standalone adjective, the full adjective form of 不(ふ)可(か)逆(ぎゃく)的(てき) (fukagyakuteki) is generally required.

Antonyms

• 可(か)逆(ぎゃく) (kagyaku): reversibility

Derived terms

Derived terms

• 不可逆的(ふかぎゃくてき) (fukagyakuteki): irreversible
• 不可逆電池(ふかぎゃくでんち) (fukagyaku denchi): an irreversible battery
• 不可逆反応(ふかぎゃくはんのう) (fukagyaku hannō): (chemistry) an irreversible reaction

References

• Shōgaku Tosho (1988) 国語大辞典（新装版） [Unabridged Dictionary of Japanese (Revised Edition)] (in Japanese), Tōkyō: Shogakukan, →ISBN