| 元素 | yuán sù | element; element of a set; chemical element |
| 因素 | yīn sù | element; factor; CL:个 |
| 素 | sù | raw silk; white; plain, unadorned; vegetarian (food); essence; nature; element; constituent; usually; always; ever |
| 素质 | sù zhì | inner quality; basic essence; change over time |
| 要素 | yào sù | essential factor; key constituent |
| 纤维素 | xiān wéi sù | cellulose |
| 激素 | jī sù | hormone |
| 毒素 | dú sù | poison |
| 尿素 | niào sù | carbamide; urea (NH2)2CO |
| 素描 | sù miáo | sketch |
| 同位素 | tóng wèi sù | isotope |
| 叶绿素 | yè lǜ sù | chlorophyll |
| 朴素 | pǔ sù | plain and simple; unadorned; simple living; not frivolous |
| 色素 | sè sù | pigment |
| 化学元素 | huà xué yuán sù | chemical element |
| 非金属元素 | fēi jīn shǔ yuán sù | nonmetal (chemistry) |
| 微量元素 | wēi liàng yuán sù | trace element (chemistry) |
| 卤素 | lǔ sù | halogen (chemistry) |
| 胡萝卜素 | hú luó bo sù | carotene |
| 素材 | sù cái | source material (in literature and art) |
| 放射性同位素 | fàng shè xìng tóng wèi sù | radioactive isotope; radioisotope |
| 抗菌素 | kàng jūn sù | antibiotic |
| 素来 | sù lái | usually |
| 放射性元素 | fàng shè xìng yuán sù | radioactive element |
| 木质素 | mù zhì sù | lignin |
| 核黄素 | hé huáng sù | riboflavin (vitamin B2) |
| 平素 | píng sù | usually; habitually; ordinarily; normally |
| 素数 | sù shù | prime number |
| 肾上腺素 | shèn shàng xiàn sù | adrenaline |
| 青霉素 | qīng méi sù | penicillin |
| 黑色素 | hēi sè sù | black pigment; melanin |
| 同素异形体 | tóng sù yì xíng tǐ | allotropy |
| 硫胺素 | liú àn sù | thiamine; vitamin B1 |
| 性激素 | xìng jī sù | sex hormone |
| 素菜 | sù cài | vegetable dish |
| 燃素说 | rán sù shuō | phlogiston theory |
| 罗素 | Luó sù | Russell (name); Bertrand Arthur William, 3rd Earl Russell (1872-1970), British logician, rationalist philosopher and pacifist |
| 维生素 | wéi shēng sù | vitamin |
| 七荤八素 | qī hūn bā sù | confused; distracted |
| 主要因素 | zhǔ yào yīn sù | main factor; principal cause |
| 互素 | hù sù | coprime (math.); relatively prime (having no common factor) |
| 亮菌甲素 | liàng jūn jiǎ sù | armillarisin (fungal enzyme used as antibiotic) |
| 信息素 | xìn xī sù | pheromone |
| 催乳激素 | cuī rǔ jī sù | prolactin |
| 催生素 | cuī shēng sù | oxytocin |
| 像素 | xiàng sù | pixel |
| 俭素 | jiǎn sù | thrifty and plain |
| 元素周期表 | yuán sù zhōu qī biǎo | periodic table |
| 克林霉素 | kè lín méi sù | clindamycin |
| 凝血素 | níng xuè sù | hemaglutinin (protein causing blood clotting) |
