| 乙 | [ yǐ ] second of the ten Heavenly Stems 十天干[shi2 tian1 gan1], second in order, letter "B" or Roman "II" in list "A, B, C", or "I, II, III" etc, second party (in legal contract, usually 乙方[yi3 fang1], as opposed to 甲方[jia3 fang1]), ethyl, bent, winding, radical in Chinese characters (Kangxi radical 5), ancient Chinese compass point: 105° |
| 乙 | [ zhé ] turning stroke (in Chinese characters), see also 折[zhe2] |
| 乙丑 | [ yǐ choǔ ] second year B2 of the 60 year cycle, e.g. 1985 or 2045 |
| 乙二醇 | [ yǐ èr chún ] glycol, ethylene glycol C2H4(OH)2 (antifreeze) |
| 乙亥 | [ yǐ haì ] twelfth year B12 of the 60 year cycle, e.g. 1995 or 2055 |
| 乙卯 | [ yǐ maǒ ] fifty-second year B4 of the 60 year cycle, e.g. 1975 or 2035 |
| 乙型 | [ yǐ xíng ] type B, type II, beta- |
| 乙型肝炎 | [ yǐ xíng gān yán ] hepatitis B |
| 乙型腦炎 | [ yǐ xíng naǒ yán ] epidemic encephalitis B, aka Japanese encephalitis |
| 乙基 | [ yǐ jī ] ethyl group (chemistry) |
| 乙太 | [ yǐ taì ] variant of 以太[yi3 tai4] |
| 乙巳 | [ yǐ sì ] forty-second year B6 of the 60 year cycle, e.g. 1965 or 2025 |
| 乙方 | [ yǐ fāng ] second party (law), see also 甲方[jia3 fang1] |
| 乙未 | [ yǐ weì ] thirty-second year B8 of the 60 year cycle, e.g. 1955 or 2015 |
| 乙氧基 | [ yǐ yǎng jī ] ethoxy (chemistry) |
| 乙氨基 | [ yǐ ān jī ] ethylamino group |
| 乙炔 | [ yǐ quē ] acetylene, ethyne C2H2 |
| 乙烯 | [ yǐ xī ] ethylene, vinyl |
| 乙烯基 | [ yǐ xī jī ] vinyl, vinyl group (chemistry) |
| 乙烷 | [ yǐ wán ] ethane (C2H6) |
| 乙狀結腸 | [ yǐ zhuàng jié cháng ] sigmoid colon (anatomy), bent colon, linking the descending colon to the rectum |
| 乙硫醇 | [ yǐ liú chún ] ethanethiol (chemistry) |
| 乙種 | [ yǐ zhǒng ] beta- or type 2 |
| 乙種促效劑 | [ yǐ zhǒng cù jì ] beta-2 agonist |
| 乙種射線 | [ yǐ zhǒng shè xiàn ] beta ray (electron stream from radioactive decay) |
| 乙種粒子 | [ yǐ zhǒng lì zǐ ] beta particle (electron, esp. high speed electron emitted by radioactive nucleus) |
| 乙肝 | [ yǐ gān ] hepatitis B |
| 乙腦 | [ yǐ naǒ ] epidemic encephalitis B (abbr. for 乙型腦炎|乙型脑炎[yi3 xing2 nao3 yan2]) |
| 乙酉 | [ yǐ yoǔ ] twenty-second year B10 of the 60 year cycle, e.g. 2005 or 2065 |
| 乙酰 | [ yǐ xiān ] acetyl (chemistry) |
| 乙酰胺吡咯烷酮 | [ yǐ xiān àn bǐ luò wán tóng ] piracetam (C6H10N2O2) |
| 乙酰膽鹼 | [ yǐ xiān dǎn jiǎn ] acetylcholine ACh (amine related to vitamin B complex) |
| 乙酸 | [ yǐ suān ] acetic acid (CH3COOH), ethanoic acid |
| 乙酸基 | [ yǐ suān jī ] acetyl radical CH3COO- |
| 乙酸根 | [ yǐ suān gēn ] acetyl radical CH3COO- |
| 乙酸鹽 | [ yǐ suān yán ] acetate CH3COO- |
| 乙醇 | [ yǐ chún ] ethanol C2H5OH, same as alcohol 酒精 |
| 乙醇酸 | [ yǐ chún suān ] glycolic acid C2H4O3 |
| 乙醚 | [ yǐ mí ] ether, diethyl ether C2H5OC2H5 |
| 乙醛 | [ yǐ quán ] acetaldehyde H3CCHO, ethanal |
| ⇒ 二氯乙烷中毒 | [ èr lǜ yǐ wán zhōng dú ] dichloroethane poisoning |
| ⇒ 二氯苯胺苯乙酸鈉 | [ èr lǜ běn àn běn yǐ suān nà ] diclofenac sodium (non-steroidal anti-inflammatory drug used to reduce swelling and as painkiller), also called voltaren 扶他林 |
| ⇒ 合四乙尺工 | [ hé sì yǐ chě gōng ] names of the five notes of the Chinese pentatonic scale, corresponding roughly to do, re, mi, sol, la |
| ⇒ 四乙基鉛中毒 | [ sì yǐ jī qiān zhōng dú ] tetraethyl lead poisoning |
| ⇒ 四氯乙烯 | [ sì lǜ yǐ xī ] tetrachloroethylene |
| ⇒ 塗乙 | [ tú yǐ ] to trim or add (to a text), to edit |
| ⇒ 太乙金華宗旨 | [ taì yǐ jīn huá zōng zhǐ ] The Secret of the Golden Flower, a classic of Chinese Taoism published in the late 17th century |
| ⇒ 孔乙己 | [ kǒng yǐ jǐ ] Kong Yiji, protagonist of short story by Lu Xun 魯迅|鲁迅[Lu3 Xun4] |
| ⇒ 對乙酰氨基酚 | [ duì yǐ xiān ān jī fēn ] paracetamol, acetaminophen |
| ⇒ 帝乙 | [ dì yǐ ] Di Yi (died 1076 BC), Shang dynasty king, reigned 1101-1076 BC |
| ⇒ 待乙妥 | [ daì yǐ tuǒ ] DEET (insect repellent) (loanword) |
| ⇒ 氧乙炔 | [ yǎng yǐ quē ] oxyacetylene |
| ⇒ 氧乙炔炬 | [ yǎng yǐ quē jù ] an oxyacetylene torch |
| ⇒ 氧乙炔焊 | [ yǎng yǐ quē hàn ] oxyacetylene welding |
| ⇒ 氧乙炔焊炬 | [ yǎng yǐ quē hàn jù ] oxyacetylene torch |
| ⇒ 氯乙烯 | [ lǜ yǐ xī ] vinyl chloride C2H3Cl, chloroethylene |
| ⇒ 環氧乙烷 | [ huán yǎng yǐ wán ] ethylene oxide |
| ⇒ 甲之蜜糖，乙之砒霜 | [ jiǎ zhī mì táng yǐ zhī pī shuāng ] one man's meat is another man's poison (idiom) |
| ⇒ 甲乙 | [ jiǎ yǐ ] first two of the ten Heavenly Stems 十天干[shi2 tian1 gan1] |
| ⇒ 聚乙烯 | [ jù yǐ xī ] polythene, polyethylene |
| ⇒ 聚四氟乙烯 | [ jù sì fú yǐ xī ] polytetrafluoroethylene (PTFE), trademarked as Teflon |
| ⇒ 聚氯乙烯 | [ jù lǜ yǐ xī ] polyvinyl chloride (PVC) |
| ⇒ 聚苯乙烯 | [ jù běn yǐ xī ] polystyrene |
| ⇒ 苯乙烯 | [ běn yǐ xī ] Styrene |
| ⇒ 超高速乙太網路 | [ chaō gaō sù yǐ taì wǎng lù ] Gigabit Ethernet |
| ⇒ 醋酸乙酯 | [ cù suān yǐ zhǐ ] ethyl acetate, acetidin |
