From Gentoo Wiki
Within the Gentoo project space, the term of 'meta' is often used as an adjective or a prefix. It has different meanings depending on the word it augments.
- Meta article — an article that provides a general overview or summary of conceptually similar ideas and related software available in Gentoo Linux.
- Meta ebuilds — an ebuild containing a developer-selected, curated software suite that generally relates to a certain family of related software packages.
- Metastructure - See the Social Contract and Metastructure Project.