atom

molecule, atom, particle, speck, grain

名词 atom:

1. (physics and chemistry) the smallest component of an element having the chemical properties of the element
2. (nontechnical usage) a tiny piece of anything
   同义词：molecule, particle, corpuscle, mote, speck

1. Scientists have unlocked the secret of the atom.
   科学家已经揭开了原子的秘密。
2. A molecule of water consists of two atoms of hydrogen and one atom of oxygen.
   水分子含有两个氢原子和一个氧原子。
3. The atom bomb is of catholic concern.
   原子弹受到普遍的关注。
4. An atom bomb would destroy a city.
   一颗原子弹能摧毁一座城市。
5. The atom bomb is the offspring of the 20th century physics.
   原子弹是20世纪物理学的产物。
6. Two atoms of hydrogen combine with one atom of oxygen to form a molecule of water.
   两个氢原子和一个氧原子结合而成一个水分子。
7. The tower was blown to atoms by the force of the explosion.
   爆炸的力量把塔炸得粉碎。

at.om

n.（名词）

A part or particle considered to be an irreducible constituent of a specified system.
原子：某成分或元素，被视为是某一特定结构中不可分的组成部分
The irreducible, indestructible material unit postulated by ancient atomism.
原子：古代唯物论中假定的不可分的、不可破坏的物质单位
An extremely small part, quantity, or amount.
微粒，微量：极小的部分、数量或总量
Chemistry Physics
【化学】 【物理学】
A unit of matter, the smallest unit of an element, having all the characteristics of that element and consisting of a dense, central, positively charged nucleus surrounded by a system of electrons. The entire structure has an approximate diameter of 0-8 centimeter and characteristically remains undivided in chemical reactions except for limited removal, transfer, or exchange of certain electrons.
原子：物质的单位、元素的最小单位，有该元素的全部特征，由中部密集的、带有正电的原子核及绕原子核的一系列电子组成。全部结构的直径大约是0-8厘米，除某些电子发生有限的移动、转移或交换以外，在化学反应性能上保持一致
This unit regarded as a source of nuclear energy.See table at subatomic particle
原子能：认为是原子能来源的单位参见 subatomic particle

来源：
Middle English attome
中古英语 attome
from Latin atomus
源自 拉丁语 atomus
from Greek atomos [indivisible, atom]
源自 希腊语 atomos [ 不可分割的，微粒]
a- [not] * see a-
a- [非，不是] *参见 a-
tomos [cutting] from temnein [to cut] * see tem-
tomos [切，割] 源自 temnein [切，割] *参见 tem-