Truedeath

noun
Death of an uploaded mind without a backup.
Source
The Fractal Prince

Cloudhook

noun
A portable device worn over the eye by citizens, connecting them to the city’s pervasive information network.
Source
A Memory Called Empire

Spimescape

noun
An augmented projection of the current locale.
Origin
Spime, an object that can be tracked in space and time.
Source
The Quantum Thief

Tream

noun
A virtual reality scenario experienced via direct interface with the brain.
Origin
Portmanteau of ‘transmit’ and ‘dream’.
Source
The Algebraist

Cryptosphere

noun proper
A networked worldwide data repository, containing the sum of recorded knowledge and populated by uploaded human minds.
Origin
Crypta (vault), from kruptós (hidden).
Source
Feersum Endjinn

Cyberdyne

noun proper
Cyberdyne Systems, developer of the Skynet artificial intelligence.
Origin
Pairing of ‘cybernetic’ with dúnamis (power).
Source
The Terminator

Ractor

noun
A professional performer of interactive fiction.
Origin
Abbreviation of ‘interactive (“ractive”) actor’.
Source
The Diamond Age

Synthespian

noun
A computer-generated artificial actor appearing in motion pictures.
Origin
Portmanteau of ‘synthetic’ and ‘thespian’.
Source
Idoru

Lightcycle

noun
A virtual vehicle that can create a barrier of light in its wake.
Source
Tron

Derezz

verb
To destroy a computer program.
Origin
Abbreviation of ‘de-resolve’.
Source
Tron

Cyberspace

noun
A graphic representation of data abstracted from the banks of every computer in the human system.
Source
Neuromancer