Atomic

The general meaning of "atomic" is "irreducible".\nThat is, reduced to the smallest possible part.\nIt has more specific meanings in several contexts:

• In chemistry, chemical atoms are grouped by type in the periodic table and consist of particles as described by particle physics.\n* In computer science, an atomic operation is one that cannot be subdivided. Or more specifically, an operation that always completes as a whole, or doesn't complete at all. See atomic (computer science).