The five values of Boundless Expansion, Self-Transformation, Dynamic Optimism, Intelligent Technology, and Spontaneous Order, which form the basis of the extropian memeticity.
- Extropia - Text by M. Alan Kazlev
 Interlinked Information to First Federation age evolving communities embodying extropian values. Included both virtual cultural communities and actual communities in several orbital free zones.
 Belt habitat of Extropist sect, Interplanetary Age to Solsys Golden Age.
- Extropian - Text by Anders Sandberg based on the term in his Transhumanist Terminology
One who affirms the values and attitudes codified and expressed in the Extropian Principles.
- Extropism (religion) - Text by M. Alan Kazlev
Interplanetary Age religion, an extension of extropist philosophy, based on rigid application of Extropian Principles. After opposition increased in the 400s AT, its leaders enforced selective isolation of the community in the Belt habitat Extropia. The habitat, along with the few remaining members of the sect, was destroyed in the Technocalypse in 566 AT.
- Extropolis - Text by Anders Sandberg
Extropian community located in Cislunar orbit, late Information to Interplanetary period.
- Extropy - Text by Anders Sandberg in his Transhumanist Terminology
A measure of intelligence, information, energy, life, experience, diversity, opportunity, and growth. The collection of forces which oppose entropy. See also Negentropism