- 原子能 yuánzǐnéng atomic energyenergy released during nuclear fission or fusion, typically used in industry or the military; also called [[核能|核能|he2 neng2]]
- 原子弹 yuánzǐdàn atomic bomba nuclear weapon that uses fission of heavy elements like uranium or plutonium to create a massive explosion; A-bomb
- 原子核 yuánzǐhé atomic nucleusThe core of an atom; it is composed of positively charged [[质子|質子|zhi4 zi3]] and neutral [[中子|中子|zhong1 zi3]] and contains most of the atom's mass.
- 亚原子 yàyuánzǐ subatomicpertaining to particles smaller than an atom
- 氢原子 qīngyuánzǐ hydrogen atomatom of the chemical element hydrogen
- 原子量 yuánzǐliàng atomic weightthe mass of an atom of a chemical element expressed in atomic mass units, usually measured relative to the mass of carbon-12; atomic mass
- 原子钟 yuánzǐzhōng atomic clockA high-precision timekeeping device that uses the stable vibration frequencies of atoms, such as cesium or rubidium.
- 原子序数 yuánzǐxùshù atomic numberthe number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table
- 原子尘 yuánzǐchén falloutradioactive dust or particles that settle in the atmosphere after a nuclear explosion; fallout
- 原子笔 yuánzǐbǐ ballpoint penballpoint pen; commonly used in Taiwan and Hong Kong
- 原子价 yuánzǐjià valenceThe capacity of an atom or group to combine with others, measured by the number of hydrogen atoms it can bond with or replace; atomicity; quantivalence
- 原子论 yuánzǐlùn atomic theoryatomic theory; atomism; the theory that all matter is composed of tiny indivisible particles
- 原子说 yuánzǐshuō atomic theorythe theory that all matter is composed of tiny particles called atoms; atomism
- 日本原子能研究所 rìběnyuánzǐnéngyánjiūsuǒ Japan Atomic Energy Research Institute
- 克原子 kèyuánzǐ gram-atomA unit of mass for a chemical element where the amount in grams is numerically equal to the element's atomic weight.
- 原子能发电 yuánzǐnéngfādiàn nuclear power generationgeneration of electricity using heat energy released by nuclear fission or nuclear fusion
- 原子能发电站 yuánzǐnéngfādiànzhàn nuclear power plantatomic power station; nuclear power plant
- 原子质量 yuánzǐzhìliàng atomic massthe mass of an atom of a chemical element expressed in atomic mass units
- 国际原子能机构 guójìyuánzǐnéngjīgòu IAEAInternational Atomic Energy Agency
- 氧原子 yǎngyuánzǐ oxygen atoman atom of the chemical element oxygen
- 中国国家原子能机构 zhōngguóguójiāyuánzǐnéngjīgòu China Atomic Energy AgencyChina Atomic Energy Agency; CAEA
- 碳原子 tànyuánzǐ carbon atom
- 内爆法原子弹 nèibàofǎyuánzǐdàn implosion atomic bombimplosion-type atomic bomb
- 原子半径 yuánzǐbànjìng atomic radiusThe typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons for an atom
- 原子反应堆 yuánzǐfǎnyìngduī atomic reactoratomic reactor; nuclear pile
- 原子发电厂 yuánzǐfādiànchǎng nuclear power planta facility that converts nuclear energy into electricity
- 原子堆 yuánzǐduī atomic pileatomic pile; an early form of a nuclear reactor
- 原子学 yuánzǐxué atomicsstudy of atoms; atomic science
- 原子序 yuánzǐxù atomic numberThe number of protons in the nucleus of an atom, which determines the position of an element in the periodic table; same as [[原子序数|原子序數|yuan2 zi3 xu4 shu4]].
- 原子战争 yuánzǐzhànzhēng atomic warfareatomic war; nuclear warfare involving the use of strategic delivery systems to deploy nuclear weapons
- 原子数 yuánzǐshù atomic numberthe number of protons in the nucleus of an atom
- 原子时代 yuánzǐshídài atomic eraThe period of human history following the discovery of nuclear energy, during which atomic power became a primary force in science and industry.
- 原子核反应堆 yuánzǐhéfǎnyìngduī nuclear reactora device used to initiate and control a self-sustained nuclear chain reaction to produce energy or isotopes
- 原子武器 yuánzǐwǔqì atomic weaponatomic weapon; nuclear weapon
- 原子炉 yuánzǐlú atomic reactorA device used to initiate and control a nuclear fission or fusion reaction in order to produce atomic energy; also called [[反应堆|反應堆|fan3 ying4 dui1]], [[反应炉|反應爐|fan3 ying4 lu2]], [[核反应堆|核反應堆|he2 fan3 ying4 dui1]], or [[核子反应炉|核子反應爐|he2 zi3 fan3 ying4 lu2]].
- 原子科学家 yuánzǐkēxuéjiā atomic scientistatomic scientist; nuclear scientist
- 原子科学家通报 yuánzǐkēxuéjiātōngbào Bulletin of the Atomic Scientistsa non-technical academic journal covering global security and public policy issues related to nuclear threats and other dangerous technologies