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Definition of Atom
1. Noun. (physics and chemistry) the smallest component of an element having the chemical properties of the element.
Category relationships: Chemical Science, Chemistry, Natural Philosophy, Physics
Terms within: Elementary Particle, Fundamental Particle, Nucleus
Specialized synonyms: Isotope, Monad, Carbon Atom, Hydrogen Atom, Free Radical, Radical
Group relationships: Chemical Element, Element, Molecule
Derivative terms: Atomic, Atomise, Atomise, Atomize
2. Noun. (nontechnical usage) a tiny piece of anything.
Specialized synonyms: Grain, Grinding, Chylomicron, Flyspeck, Identification Particle
Generic synonyms: Material, Stuff
Derivative terms: Atomic, Atomise, Molecular
Definition of Atom
1. n. An ultimate indivisible particle of matter.
2. v. t. To reduce to atoms.
Definition of Atom
1. the smallest unit of an element [n -S] : ATOMIC, ATOMICAL [adj]
Medical Definition of Atom
1.