Trimensional

adjective
Having or appearing to have length, breadth, and depth: a three-dimensional object.
Origin
Derived from triplus (triple).
Source
Foundation

Psychohistory

noun
A branch of mathematics dealing with the reactions of human conglomerates to fixed social and economic stimuli.
Source
Foundation

Excession

noun
Something excessive.
Source
Excession

Thoughtcrime

noun
The criminal act of holding unspoken beliefs or doubts that threaten the ruling party.
Source
Nineteen Eighty-Four

Grislesque

adjective
Of a simulated scenario: so complex as to cause horror or disgust.
Origin
Corruption of ‘grisly’.
Source
The Hydrogen Sonata

Sculption

noun
Plastic surgery.
Origin
Derived from ‘sculpt’.
Source
The Hydrogen Sonata

Hyperspace

noun
A spacial dimension through which faster-than-light travel is possible.
Source
The Voyage of the Space Beagle

Wirehead

noun informal
A person fitted with an electronic implant to stimulate the pleasure centres of the brain.
Source
The Ringworld Engineers

Girdlecity

noun proper
A city that encircles a planet.
Source
The Hydrogen Sonata

Ringworld

noun
A ring-shaped artificial habitat encircling a star.
Source
Ringworld

Chickenhead

noun informal
A mentally retarded person.
Source
Do Androids Dream of Electric Sheep?

Simstim

noun
A recording or broadcast of the sensorium.
Origin
Abbreviation of ‘simulated stimulation’.
Source
Neuromancer