| 热 |  rè | to warm up / to heat up / hot (of weather) / heat / fervent |   |
| 烫 | tàng | to scald / to burn (by scalding) / to blanch (cooking) / to heat (sth) up in hot water / to perm / to iron / scalding hot | |
| 加热 | jiā rè | to heat | |
| 热量 | rè liàng | heat / quantity of heat / calorific value | |
| 热力 | rè lì | heat | |
| 热气 | rè qì | steam / heat / CL:股[gu3] | |
| 加温 | jiā wēn | to heat / to add warmth / to raise temperature / fig. to stimulate | |
| 暑气 | shǔ qì | (summer) heat | |
| 烧 | shāo | to burn / to cook / to stew / to bake / to roast / to heat / to boil (tea, water etc) / fever / to run a temperature / (coll.) to let things go to one's head | |
| 暑 | shǔ | heat / hot weather / summer heat | |
| 燂 | qián | to heat / to scorch | |
| 爇 | ruò | burn / heat | |
| 炘 | xīn | mid-day glare / heat | |
| 焮 | xìn | heat / flame / inflammation | |
| 散热 | sàn rè | to dissipate heat | |
| 发热 | fā rè | to have a high temperature / feverish / unable to think calmly / to emit heat | |
| 火辣 | huǒ là | painful heat / scorching / rude and forthright / provocative / hot / sexy | |
| 保温 | bǎo wēn | to keep hot / heat preservation | |
| 动情 | dòng qíng | to get excited / passionate / aroused to passion / to fall in love / on heat (of animals) | |
| 火气 | huǒ qì | anger / internal heat (TCM) | |
| 热度 | rè dù | level of heat / (fig.) zeal / fervor / (coll.) a temperature (i.e. abnormally high body heat) | |
| 清热 | qīng rè | to alleviate fever (medicine) / to clear internal heat (Chinese medicine) | |
| 催情 | cuī qíng | to promote estrus / to bring an animal to heat by artificial means | |
| 热能 | rè néng | heat energy | |
| 上火 | shàng huǒ | to get angry / to suffer from excessive internal heat (TCM) | |
| 火候 | huǒ hòu | heat control / maturity / crucial moment | |
| 热浪 | rè làng | heat wave | |
| 酷暑 | kù shǔ | intense heat / extremely hot weather | |
| 散热片 | sàn rè piàn | heat sink | |
| 虚脱 | xū tuō | to collapse (from dehydration or loss of blood) / heat exhaustion | |
| 地热 | dì rè | geothermal heat | |
| 炙手可热 | zhì shǒu kě rè | lit. burn your hand, feel the heat (idiom) / fig. arrogance of the powerful / a mighty figure no-one dares approach / hot (exciting or in favor) | |
| 发情 | fā qíng | (zoology) (of a female) to be in heat / (of a male) to be in rut | |
| 中暑 | zhòng shǔ | to suffer heat exhaustion / sunstroke / heatstroke | |
| 耐热 | nài rè | heat resistant / fireproof | |
| 热流 | rè liú | heat flow / heat flux | |
| 酷热 | kù rè | torrid heat | |
| 换热器 | huàn rè qì | heat exchanger | |
| 灼伤 | zhuó shāng | a burn (tissue damage from heat, chemicals etc) / to burn (the skin etc) / (fig.) (of anger, jealousy etc) to hurt (sb) | |
| 余热 | yú rè | residual heat / surplus heat / waste heat / (fig.) capacity of retirees to continue to work | |
| 消暑 | xiāo shǔ | to spend a summer holiday / to beat the summer heat | |
| 热源 | rè yuán | heat source | |
| 传热 | chuán rè | to transmit heat | |
| 热泵 | rè bèng | heat pump | |
| 守恒 | shǒu héng | conservation (e.g. of energy, momentum or heat in physics) / to remain constant (of a number) | |
| 虚火 | xū huǒ | excess of internal heat due to poor general condition (TCM) / the prestige of another person, which one borrows for oneself | |
| 烧水 | shāo shuǐ | to heat water / to boil water | |
| 高热量 | gāo rè liàng | high calorie (foodstuff) / high heat content | |
| 小太阳 | xiǎo tài yáng | parabolic heater / heat dish | |
| 降火 | jiàng huǒ | to decrease internal heat (Chinese medicine) | |
| 热交换器 | rè jiāo huàn qì | heat exchanger | |
| 发春 | fā chun | in heat | |
| 发春 | fā chūn | in heat | |
| 绝缘体 | jué yuán tǐ | electrical insulation / heat insulation | |
| 慢火 | màn huǒ | low heat (cooking) | |
| 叫春 | jiào chūn | to caterwaul / to call like an animal in heat | |
| 痱子 | fèi zi | miliaria (type of skin disease) / prickly heat / sweat rash | |
| 吸热 | xī rè | heat absorption | |
| 耐受性 | nài shòu xìng | tolerance (to heat, acid etc) / resistance | |
| 去火 | qù huǒ | to reduce internal heat (TCM) | |
| 热传导 | rè chuán dǎo | heat transfer / thermal conduction | |
| 蓄热 | xù rè | heat storage | |
| 热缩管 | rè suō guǎn | heat shrink tubing (aka heatshrink) (shrinkable plastic tube used to insulate wires) | |
| 热机 | rè jī | heat engine | |
| 导热性 | dǎo rè xìng | heat conduction | |
| 火 | huǒ | fire / urgent / ammunition / fiery or flaming / internal heat (Chinese medicine) / hot (popular) / classifier for military units (old) / Kangxi radical 86 | |
| 白炽 | bái chì | white heat / incandescence | |
| 大暑 | Dà shǔ | Dashu or Great Heat, 12th of the 24 solar terms 二十四節氣|二十四节气 / 23rd July-6th August | |
| 比热 | bǐ rè | specific heat | |
| 小暑 | Xiǎo shǔ | Xiaoshu or Lesser Heat, 11th of the 24 solar terms 二十四節氣|二十四节气 / 7th-22nd July | |
| 热风枪 | rè fēng qiāng | heat gun | |
| 热导管 | rè dǎo guǎn | heat pipe | |
| 白热 | bái rè | white heat / incandescence | |
| 传热学 | zhuàn rè xué | theory of heat / heat transmission (physics) | |
| 败火 | bài huǒ | relieve inflammation or internal heat | |
| 败毒 | bài dú | (TCM) to relieve inflamation and internal heat / to detoxify | |
| 处暑 | Chǔ shǔ | Chushu or End of Heat, 14th of the 24 solar terms 二十四節氣|二十四节气 / 23rd August-7th September | |
| 热应力 | | heat stress | |
| 潜热 | qián rè | latent heat | |
| 炕 | kàng | kang (a heatable brick bed) / to bake / to dry by the heat of a fire | |
| 烘 | hōng | to bake / to heat by fire / to set off by contrast | |
| 痱 | fèi | prickly heat | |
| 动情期 | dòng qíng qī | estrus / the rutting season / on heat | |
| 疿 | fèi | prickly heat | |
| 釬 | hàn | to solder / weld by heat | |
| 核热 | hé rè | nuclear heat | |
| 煖 | nuǎn | variant of 暖 / warm / to heat / genial | |
| 热痉挛 | rè jìng luán | heat cramps | |
| 衰变热 | shuāi biàn rè | decay heat | |
| 伴热 | bàn rè | electric heat tracing / steam tracing (for maintaining the temperature of pipes etc) | |
| 六淫 | liù yín | (TCM) six excesses causing illness, namely: excessive wind 風|风[feng1], cold 寒[han2], heat 暑[shu3], damp 濕|湿[shi1], dryness 燥[zao4], fire 火[huo3] | |
| 六邪 | liù xié | (TCM) six unhealthy influences causing illness, namely: excessive wind 風|风[feng1], cold 寒[han2], heat 暑[shu3], damp 濕|湿[shi1], dryness 燥[zao4], fire 火[huo3] | |
| 冒暑 | mào shǔ | heat stroke (TCM) | |
| 受暑 | shòu shǔ | to suffer heatstroke / to suffer heat exhaustion | |
| 均热 | jūn rè | to heat evenly (e.g. in smelting metal) | |
| 城市热岛 | chéng shì rè dǎo | city heat island (i.e. large city centers are hotter) | |
| 大热 | dà rè | great heat / very popular | |
| 温觉 | wēn jué | heat sensation | |
| 湿温 | shī wēn | damp heat / summer fever (TCM) | |
| 热函 | rè hán | enthalpy / heat content (thermodynamics) | |
