| 吸收 | xī shōu | to absorb; to assimilate; to ingest |
| 吸 | xī | to breathe; to suck in; to absorb; to inhale |
| 吸附 | xī fù | absorption (chemistry) |
| 吸引 | xī yǐn | to attract (interest, investment etc); CL:个 |
| 吸取 | xī qǔ | to absorb; to draw (a lesson, insight etc); to assimilate |
| 吸气 | xī qì | to inhale; to draw in breath |
| 吸引力 | xī yǐn lì | attractive force (such as gravitation); sex appeal; attractiveness |
| 吸热 | xī rè | heat absorption |
| 吸湿 | xī shī | to absorb; absorbent |
| 吸湿性 | xī shī xìng | absorbent |
| 吸烟 | xī yān | to smoke |
| 吸食 | xī shí | to suck; to take in |
| 吸力 | xī lì | attraction (in gravitation or electrostatics); attractive force |
| 吸附剂 | xī fù jì | absorbent |
| 吸血鬼 | xī xuè guǐ | a leech; blood-sucking vermin; a vampire (translated European notion); fig. a cruel exploiter, esp. a capitalist exploiting the workers |
| 吸盘 | xī pán | suction pad; sucker |
| 吸管 | xī guǎn | (drinking) straw; pipette; eyedropper; snorkel; CL:支 |
| 吸吮 | xī shǔn | to suck in |
| 吸毒 | xī dú | to take drugs; addiction |
| 吸住 | xī zhù | to draw (towards); to be drawn to; to be sucked in |
| 吸入 | xī rù | to breathe in; to suck in; to inhale |
| 吸入器 | xī rù qì | inhaler |
| 吸入阀 | xī rù fá | suction valve |
| 吸取教训 | xī qǔ jiào xun | to draw a lesson (from a setback) |
| 吸口 | xī kǒu | sucker mouth |
| 吸尘器 | xī chén qì | vacuum cleaner; dust catcher |
| 吸尘机 | xī chén jī | vacuum cleaner |
| 吸引子 | xī yǐn zi | attractor (math., dynamical systems) |
| 吸引子网络 | xī yǐn zǐ wǎng luò | attractor network |
| 吸收剂量 | xī shōu jì liàng | absorbed dose |
| 吸毒成瘾 | xī dú chéng yǐn | drug addiction |
| 吸气器 | xī qì qì | inhaler |
| 吸氧 | xī yǎng | to breathe; to absorb oxygen |
| 吸水 | xī shuǐ | absorbent |
| 吸烟区 | xī yān qū | smoking area |
| 吸烟室 | xī yān shì | smoking room |
| 吸留 | xī liú | to absorb; to take in and retain |
| 吸尽 | xī jìn | to absorb completely; to drink up |
| 吸睛 | xī jīng | eye-catching |
| 吸碳 | xī tàn | to absorb carbon |
| 吸碳存 | xī tàn cún | carbon sink |
| 吸积 | xī jī | accretion |
| 吸纳 | xī nà | to take in; to absorb; to admit; to accept |
| 吸声 | xī shēng | sound absorption |
| 吸着 | xī zhuó | sorption (generic term for absorption, adsorption, diffusion, precipitation etc) |
| 吸虫 | xī chóng | trematoda; fluke; trematode worm, approx 6000 species, mostly parasite, incl. on humans |
| 吸虫纲 | xī chóng gāng | Class Trematoda; fluke; trematode worm, a parasite incl. on humans |
| 吸血 | xī xiě | to suck blood |
| 吸血者 | xī xuè zhě | blood sucker; a leech; leecher |
| 吸进 | xī jìn | to inhale; to breathe in |
