Apedia

Atom ˈætəm Part Smallest Chemical Molecule 原子 Amount

word atom
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Collins
atom ★★☆☆☆
/æ̱təm/
1
[N-COUNT 可数名词]原子 An atom is the smallest amount of a substance that can take part in a chemical reaction.
  • A methane molecule is composed of one carbon atom attached to four hydrogens.

    甲烷分子由1个碳原子与4个氢原子构成。


  • Oxford
    atom / ˈætəm ; NAmE ˈætəm / noun the smallest part of a chemical element that can take part in a chemical reaction 原子 the splitting of the atom 原子的分裂 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组成一个水分子。 atom atoms atom / ˈætəm ; NAmE ˈætəm /
    LDC
    atomat‧om /ˈætəm/ ●●○ noun [countable]
    Word Origin
    Examples
    word sets
    Collocations
    1the smallest part of an element that can exist alone or can combine with other substances to form a molecule:  carbon atomsatom of two atoms of hydrogen2a very small amount of something – used for emphasisatom of There isn’t an atom of truth in it.
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