| 叉 | chā | fork / pitchfork / prong / pick / cross / intersect / "X" |
| 片子 | piān zi | film / movie / film reel / phonograph record / X-ray image |
| 耗时 | hào shí | time-consuming / to take a period of (x amount of time) |
| 相提并论 | xiāng tí bìng lùn | to discuss two disparate things together (idiom); to mention on equal terms / to place on a par with / (often with negatives: impossible to mention X in the same breath as Y) |
| 情愿 | qíng yuàn | willingness / would rather (agree to X than Y) |
| 增收 | zēng shōu | to increase revenue / to increase income by (x amount) / to levy (a surcharge, tax increase etc) / (of a school) to have an increased student intake |
| X光 | X guāng | X-ray |
| 探伤 | tàn shāng | to inspect metal for flaws (using X-ray or ultrasound etc) |
| 透视 | tòu shì | (drawing and painting) perspective / (medicine) to perform fluoroscopy; to examine by X-ray / (fig.) to take a penetrating look at sth; to gain insight |
| 同日而语 | tóng rì ér yǔ | lit. to speak of two things on the same day (idiom); to mention things on equal terms (often with negatives: you can't mention X at the same time as Y) |
| ○ | líng | character used in Taiwan as a substitute for a real name (like "X" in English) / variant of 〇[ling2] |
| 癸 | guǐ | tenth of the ten Heavenly Stems 十天干[shi2 tian1 gan1] / tenth in order / letter "J" or Roman "X" in list "A, B, C", or "I, II, III" etc / ancient Chinese compass point: 15° / deca |
| 睽违 | kuí wéi | to be separated (from a friend, one's homeland etc) for a period of time / after a hiatus of (x years) |
| 龛影 | kān yǐng | (radiography) the shadow of a peptic ulcer in a barium-swallow X-ray |
| 极轴 | jí zhóu | polar axis (x-axis in polar coordinates) |
| 截距 | jié jù | intercept (the point at which a line crosses the x- or y-axis) |
| 结合律 | jié hé lǜ | associative law (xy)z = x(yz) (math.) |
| 二次方 | èr cì fāng | square (i.e. x times x) |
| 似地 | shì de | (used to form an adverbial phrase X + 似地[shi4de5]) like (X); as if (X) / Taiwan pr. [si4de5] |
| 叉架 | chā jià | trestle / X-shaped frame |
| 吉电子伏 | jí diàn zǐ fú | giga electron volt GeV (unit of energy equal to 1.6 x 10⁻¹⁰ joules) |
| 微聚焦 | wēi jù jiāo | microfocus x-ray computed tomography (microCT) |
| 普朗克常数 | Pǔ lǎng kè cháng shù | (physics) Planck's constant h, approximately 6.626 x 10⁻³⁴ joule.seconds |
| 法国梧桐 | fǎ guó wú tóng | plane tree (Platanus x acerifolia) |
| 不定元 | bù dìng yuán | indeterminate element (math.), often denoted by x |