atomic

/ə'tɔmik/
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Definition
  1. Adjective:
    • Relating to atoms: Pertaining to or consisting of atoms, the basic units of matter.
    • Involving atomic energy: Relating to the energy released from reactions within atomic nuclei, especially in a destructive context (e.g., weapons).
    • Extremely small; minute: Immeasurably or indivisibly small.
Examples of Usage
  • Relating to atoms:
    • The scientist studied the atomic structure of the new element.
    • Helium is an atomic gas.
  • Involving atomic energy:
    • The treaty aimed to reduce the number of atomic weapons.
    • The atomic age began in the mid-20th century.
  • Extremely small:
    • The difference between the two samples was atomic. (This usage is less common and often figurative.)
Advanced Usage
  • "Atomic level": Referring to the scale of individual atoms.
    • This microscope allows us to see matter at the atomic level.
  • "Atomic physics": The branch of physics that studies atoms as isolated systems.
    • She specialized in atomic physics.
Variants and Related Words
  • Atom (n): The smallest unit of a chemical element.
    • A molecule of water consists of two hydrogen atoms and one oxygen atom.
  • Atomically (adv): In an atomic manner; at the atomic level.
    • The substance was analyzed atomically.
  • Subatomic (adj): Smaller than or occurring within an atom.
    • Protons and electrons are subatomic particles.
Synonyms
  • Nuclear: (Specifically for energy/weapons) Pertaining to the nucleus of an atom.
  • Minute: Extremely small.
  • Elemental: Of or relating to the basic, constituent parts.
Related Phrases and Compounds
  • Atomic bomb: A bomb whose explosive power comes from a nuclear fission reaction.
  • Atomic number: The number of protons in the nucleus of an atom, defining a chemical element.
  • Atomic weight: The average mass of atoms of an element.
  • Atomic clock: An extremely precise clock that uses the vibration frequencies of atoms.
Adjective
  1. immeasurably small
  2. (weapons) deriving destructive energy from the release of atomic energy
    • nuclear war
    • nuclear weapons
    • atomic bombs
  3. of or relating to or comprising atoms
    • atomic structure
    • atomic hydrogen

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