| 气体 | qì tǐ | gas (i.e. gaseous substance) |   |
| 煤气 | méi qì | coal gas / gas (fuel) | |
| 瓦斯 | wǎ sī | gas (loanword) | |
| 气 |  qì | gas / air / smell / weather / to make angry / to annoy / to get angry / vital energy / qi | |
| 加油 | jiā yóu | to add oil / to top up with gas / to refuel / to accelerate / to step on the gas / (fig.) to make an extra effort / to cheer sb on | |
| 开关 | kāi guān | power switch / gas valve / to open the city (or frontier) gate / to open and close / to switch on and off | |
| 天然气 | tiān rán qì | natural gas | |
| 排放 | pái fàng | to arrange in order / to emit / to discharge (exhaust gas, waste water etc) / (of animals) to ovulate / to discharge semen | |
| 燃气 | rán qì | fuel gas (coal gas, natural gas, methane etc) | |
| 加油站 | jiā yóu zhàn | gas station | |
| 油气 | yóu qì | oil and gas | |
| 液化气 | yè huà qì | liquid gas / bottled gas (fuel) | |
| 油门 | yóu mén | accelerator (pedal) / gas pedal / throttle | |
| 废气 | fèi qì | exhaust gas / industrial waste gas | |
| 施放 | shī fàng | to fire / to discharge / to release (fireworks, smokescreen, poison gas, virus etc) | |
| 气管 | qì guǎn | windpipe / trachea / respiratory tract / air duct / gas pipe | |
| 毒气 | dú qì | poison gas / toxic gas / manifestation of passion, anger etc (Buddhism) | |
| 面罩 | miàn zhào | mask / visor / facepiece (e.g. diving suit, gas mask) | |
| 沼气 | zhǎo qì | marsh gas / methane CH4 | |
| 断气 | duàn qì | to stop breathing / to breathe one's last / to die / to cut the gas supply | |
| 液化石油气 | yè huà shí yóu qì | liquefied petroleum gas | |
| 漏气 | lòu qì | to leak air or gas | |
| 弥散 | mí sàn | to dissipate everywhere (of light, sound, gas etc) | |
| 气瓶 | qì píng | gas cylinder / air bottle / air tank (diving) | |
| 气田 | qì tián | gas field | |
| 防毒面具 | fáng dú miàn jù | gas mask | |
| 三废 | sān fèi | three types of waste product, namely: waste water 廢水|废水[fei4 shui3], exhaust gas 廢氣|废气[fei4 qi4], industrial slag 廢渣|废渣[fei4 zha1] | |
| 回火 | huí huǒ | to temper (iron) / to flare back / flareback (in a gas burner) / (of an engine) to backfire | |
| 燃气轮机 | rán qì lún jī | gas turbine | |
| 毒剂 | dú jì | a poison / a toxic agent / poison gas / a chemical weapon | |
| 毒气弹 | dú qì dàn | poison gas shell / poison gas grenade | |
| 光气 | guāng qì | phosgene COCl2, aka carbonyl chloride, a poisonous gas | |
| 储气罐 | chǔ qì guàn | gas tank (for gas, not gasoline) | |
| 气焊 | qì hàn | gas welding | |
| 压缩天然气 | | compressed natural gas | |
| 芥子气 | jiè zǐ qì | mustard gas | |
| 笑气 | xiào qì | laughing gas (nitrous oxide) | |
| 汽灯 | qì dēng | gas lamp | |
| 跑 | pǎo | to run / to run away / to escape / to run around (on errands etc) / (of a gas or liquid) to leak or evaporate / (verb complement) away / off | |
| 气体探测器 | qì tǐ tàn cè qì | gas detector | |
| 稀有气体 | xī yǒu qì tǐ | rare gas / noble gas (chemistry) | |
| 惰性气体 | duò xìng qì tǐ | inert gas / noble gas (chemistry) | |
| 出气口 | chū qì kǒu | gas or air outlet / emotional outlet | |
| 阿伏伽德罗定律 | A1 fú jiā dé luó dìng lu:4 | Avogadro's law, a gas law named after Amedeo Avogadro | |
| 奥姆真理教 | Aò mǔ Zhēn lǐ jiào | Aum Shinrikyo (or Supreme Truth), the Japanese death cult responsible for the 1995 sarin gas attack on the Tokyo subway | |
| 伴生气 | bàn shēng qì | associated gas (petrochemical engineering) | |
| 催泪瓦斯 | cuī lèi wǎ sī | tear gas | |
| 毒剂弹 | dú jì dàn | gas projectile | |
| 毒剂震检 | dú jì zhèn jiǎn | gas detection | |
| 防毒工事 | fáng dú gōng shì | protective gas work | |
| 气体离心 | qì tǐ lí xīn | gas centrifuge | |
| 全身中毒性毒剂 | quán shēn zhōng dú xìng dú jì | systemic agent / systemic gas / systemic poison | |
| 神经性毒剂 | shén jīng xìng dú jì | nerve agent / nerve gas | |
| 温室气体 | wēn shì qì tǐ | greenhouse gas | |
| 一氧化二氮 | yī yǎng huà èr dàn | nitrous oxide N2O / laughing gas | |
| 供燃气 | gōng rán qì | gas supply | |
| 储气 | chǔ qì | gas storage | |
| 加大油门 | jiā dà yóu mén | to accelerate / to step on the gas | |
| 加油工 | jiā yóu gōng | gas station attendant | |
| 多功能表 | duō gōng néng biǎo | multifunction meter (e.g. for gas and electricity supply) | |
| 毒瓦斯 | dú wǎ sī | poisonous gas / stinking fart | |
| 气煤 | qì méi | gas coal | |
| 汽暖 | qì nuǎn | gas heating | |
| 流理台 | liú lǐ tái | kitchen counter (generally including sink, food preparation area and gas range) (Tw) | |
| 温室废气储存 | wēn shì fèi qì chǔ cún | greenhouse gas sequestration | |
| 燃气电厂 | rán qì diàn chǎng | gas fired power station | |
| 碳酰氯 | tàn xiān lu:4 | carbonyl chloride COCl2 / phosgene, a poisonous gas | |
| 贮存管 | zhù cún guǎn | storage container for liquid or gas / gas holder | |
| 迷魂香 | mí hún xiāng | a kind of sleeping gas or smoke used by thieves to incapacitate victims | |
| 逸散 | yì sàn | (of gas, liquid, toxins, heat etc) to escape / to dissipate | |
| 发生炉煤气 | fā shēng lú méi qì | producer gas | |
| 烟气脱硫 | yān qì tuō liú | flue gas desulphurization | |
| 亚洲最低成本温室气体排放计划 | | Least-Cost Greenhouse Gas Emission Plan in Asia | |
| 煤气运输和储存专家会议 | | Meeting of Experts on the Transport and Storage of Gas | |
| 温室气体浓度 | wēn shì qì tǐ nóng duó | greenhouse gas concentration / GHG concentration | |
| 国家温室气体清单专题组 | | Task Force on National Greenhouse Gas Inventories | |
| 煤气工业经济研究委员会 | | Economic Research Committee of the Gas Industry | |
| 欧洲液化石油气协会 | | European Liquefied Petroleum Gas Association | |
| 国家温室气体清单 | | National Greenhouse Gas Inventory | |
| 温室气体核算标准倡议 | wēn shì qì tǐ hé suàn biāo zhǔn chàng yì | Greenhouse Gas Protocol Initiative / GHG Protocol Initiative | |
| 2006 年IPCC国家温室气体清单指南 | | 2006 IPCC Guidelines for National Greenhouse Gas Inventories | |
| 气体离心机 | qì tǐ lí xīn jī | gas centrifuge | |
| 欧洲联盟温室气体排放权交易计划 | | European Union Greenhouse Gas Emission Trading Scheme / EU Emissions Trading Scheme | |
| 煤气中心 | | Gas Centre | |
| 金属焊条惰性气体保护焊 | | metallic inert gas welding / MIG welding | |
| 惰性气体保护金属极电弧焊 | | metal electrode inert gas arc welding / MIG arc welding | |
| 通风气体 | tòng fēng qì tǐ | ventilated gas | |
| 国际燃气业联合会 | | International Gas Union | |
| 多级轻气炮 | duō jí qīng qì pào | multistage light gas gun | |
| 开发浅层油气资源国际会议 | | International Conference on the Development of Shallow Oil and Gas Resources | |
| 有害气体 | yǒu hài qì tǐ | deleterious gas | |
| 天然气水合物 | tiān rán qì shuǐ hé wù | gas hydrate | |
| 载气 | | carrier gas / eluent gas | |
| 煤炭、石油和天然气储量 | | coal, oil and natural gas reserves | |
| 神经毒剂 | shén jīng dú jì | nerve gas | |
| 酸气 | suān qì | sour gas | |
| 普通汽油 | pǔ tòng qì yóu | regular gas | |
| 温室气体的固存 | | greenhouse gas sequestration | |
| 多元气体容器 | duō yuán qì tǐ róng qì | multiple-element gas container | |
| 近海油气环境论坛 | jìn hǎi yóu qì huán jìng lùn tán | Offshore Oil and Gas Environment Forum | |
