What does atom mean?

atom(Noun) The smallest, indivisible constituent part or unit of something. atom(Noun) The smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a nucleus surrounded by electrons. read more

Atom. The name Atom applies to a pair of related Web standards. The Atom Syndication Format is an XML language used for web feeds, while the Atom Publishing Protocol is a simple HTTP-based protocol for creating and updating web resources. Web feeds allow software programs to check for updates published on a website. read more

an atom with one of the electrons replaced by some other particle: muonic atom; kaonic atom. Energy. this component as the source of nuclear energy. a hypothetical particle of matter so minute as to admit of no division. read more