From Seed
- Administrator - a colonist who has been voted for and won the right to control bits and machines.
- Canyon, The - the canyon where the Tower has been built by TAU
- Chimpbot - Repair droids that wander the corridors of the Tower
- Da Vinci - an unspecified planet orbiting the star Beta Hydri
- Floatbed - Machine used by TAU to hatch humans. Colonists use Floatbeds to restore body nutrients and chemistry to acceptable levels.
- Monowrapper tape - All-purpose repair tape described as the "Gaffer tape of the future"
- Outside - Slang for any area outside the Tower
- Ring - cooperative group of colonists
- Ring member - a colonist with full access to a ring's stash. A colonist can only be a member of one ring at a time.
- Ring supporter - a colonist with limited access to a ring's stash. A colonist may be a supporter of more than one ring.
- Seed - Slang term for colonist
- Seedling - Slang term for colonist
- Steambath - Recreational area where calming, recreational drugs are suspended in steam to relax stressed colonists.
- TAU - Terraforming Administration Utility - artificial swarm intelligence that controls the Tower
- Tower - terraforming structure that houses the colonists