Terms used by the descent crew, Asterion staff and the Directorate. Where slang and official terms differ, both are given.
| Term | Meaning |
|---|---|
| Asterion | The ring-shaped research station at the Rift rim. See Asterion Station. |
| Brake | Carrier routine that emits a decoy pulse to slow nearby pursuers. See Field routines. |
| Cache | A sealed supply container found in the shaft. Some were placed by the Directorate; some were not. See The caches. |
| Calibration | A temporary field adjustment chosen between floors (slang: card). See Field calibrations. |
| Carrier | The armoured descent elevator; also the name of its heaviest chassis. See C-9 “Wayfarer”. |
| Credits | Directorate salvage tallies kept in the carrier ledger. See Credits and caches. |
| Descent lock | The coupler setting that holds the carrier to the mapped route and prevents ascent. |
| Echo | A sector that repeats an earlier environmental profile. See Echo sectors. |
| Floor | One operation window: a stretch of shaft cleared between two route markers. Ten floors make a sector. |
| Guard | Carrier routine that diverts power to the shield field. |
| Guardian | The machine holding the tenth floor of a sector. Official term: access-control unit. |
| Hardpoint / mount | A universal weapon mount on the carrier frame. See The garage. |
| Interval | Short for phase interval, the unit of depth inside the Rift. See Rift physics. |
| K-1 | The first probe sent into the Rift in 2189. |
| Ledger | The carrier’s record of salvage, credits and supplies. |
| Manual | Direct pilot aiming. Pauses the drone link. |
| Overdrive | Carrier routine that raises the weapon cycling rate. |
| Phase coupler | The reactor interface that draws current from a Rift Shard and anchors the route. See Reactor and phase coupler. |
| Relay | A buffered signal repeater in the shaft wall. Eleven lower relays failed in 2217. |
| Route key | Access data recovered from a guardian, needed to anchor the next sector. |
| Route marker | A stable anchor point at the end of a floor. A disabled carrier falls back to the last one. |
| Sector | A stable stretch of shaft containing ten floors. One hundred are mapped. |
| Shard | A fragment of anomalous Rift material. See Rift Shards. |
| Warden | Any machine of the access-control family; also the guardian of the Frozen Reactor. See The Warden system. |


