| 余 | yú | extra; surplus; remaining; remainder after division; (following numerical value) or more; in excess of (some number); residue (math.); after; I; me; I (used by emperor)surname Yu |
| 余弦 | yú xián | cosine (of angle), written cos θ |
| 余年 | yú nián | one's remaining years |
| 余数 | yú shù | remainder (in division) |
| 余切 | yú qiē | cotangent (of angle), written cot θ or ctg θ |
| 余地 | yú dì | margin; leeway |
| 余额 | yú é | balance (of an account, bill etc); surplus; remainder |
| 余粮 | yú liáng | surplus grain |
| 余下 | yú xià | remaining |
| 余角 | yú jiǎo | complementary angle (additional angle adding to 90 degrees) |
| 余音 | yú yīn | lingering sound |
| 余割 | yú gē | cosecant (of angle), written cosec θ or csc θ |
| 余党 | yú dǎng | remnants (of a defeated clique); rump |
| 余姚 | Yú yáo | Yuyao county level city in Ningbo 宁波, Zhejiang |
| 余缺 | yú quē | surplus and shortfall |
| 余月 | yú yuè | alternative term for fourth lunar month |
| 余车 | yú chē | emperor's carriage |
| 余光 | yú guāng | out of the corner of one's eyes |
| 余力 | yú lì | residual force |
| 余勇可贾 | yú yǒng kě gǔ | lit. spare valor for sale (idiom); fig. after former successes, still ready for more work; not resting on one's laurels |
| 余姚市 | Yú yáo shì | Yuyao county level city in Ningbo 宁波, Zhejiang |
| 余存 | yú cún | remainder; balance |
| 余孽 | yú niè | remaining evil element; surviving members (of evil former regime); dregs (of colonial administration) |
| 余干 | Yú gān | Yugan county in Shangrao 上饶, Jiangxi |
| 余干县 | Yú gān xiàn | Yugan county in Shangrao 上饶, Jiangxi |
| 余弧 | yú hú | complementary arc |
| 余怒 | yú nù | residual anger |
| 余悸 | yú jì | lingering fear |
| 余庆 | Yú qìng | Yuqing county in Zun'yi 遵义, Guizhou |
| 余庆县 | Yú qìng xiàn | Yuqing county in Zun'yi 遵义, Guizhou |
| 余数定理 | yú shù dìng lǐ | the Remainder Theorem |
| 余杭 | Yú háng | Yuhang district of Hangzhou city 杭州市, Zhejiang |
| 余杭区 | Yú háng qū | Yuhang district of Hangzhou city 杭州市, Zhejiang |
| 余江 | Yú jiāng | Yujiang county in Yingtan 鹰潭, Jiangxi |
| 余江县 | Yú jiāng xiàn | Yujiang county in Yingtan 鹰潭, Jiangxi |
| 余波 | yú bō | aftermath; repercussions; fallout |
| 余热 | yú rè | residual heat; surplus heat; fig. old people's capacity for work |
| 余烬 | yú jìn | ember |
| 余留 | yú liú | remainder; fractional part (after the decimal point); unfinished |
| 余留事务 | yú liú shì wù | unfinished business |
| 余留无符号数 | yú liú wú fú hào shù | unsigned remainder (i.e. the remainder after rounding to the nearest integer) |
| 余皇 | yú huáng | large warship; name of warship of Wu kingdom during Spring and Autumn period |
| 余码 | yú mǎ | excess code (i.e. the unused bits in binary-coded decimal) |
| 余绪 | yú xù | vestigial residue; a throwback (to a former age) |
| 余者 | yú zhě | the remaining people |
| 余辉 | yú huī | twilight; afterglow |
| 余量 | yú liàng | remnant; leftover; tolerance (i.e. allowed error) |
| 余钱 | yú qián | surplus money |
| 余集 | yú jí | complement of a set S (math.); the set of all x not in set S |
| 余震 | yú zhèn | earthquake aftershock |
