Atom may refer to any of the following:
3. Atom is an open-source text and source code editor. Atom was retired (sunsetted) on December 15, 2022, due to lack of development and enhancements. More information is available on the GitHub blog site.
4. An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central positively charged nucleus surrounded by one or more negatively charged electron. The nucleus contains one or more fairly heavy particles known as protons and neutrons.