Solsake

exclamation
An oath sworn in the name of humanity’s home star.
Source
Faithful to Thee, Terra, in Our Fashion

Spacell

noun
A perpetual power source of extraterrestrial inception.
Origin
Portmanteau of ‘space’ and (power-) ‘cell’.
Source
Roadside Picnic

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

Spindizzy

noun informal
The Dillon-Wagoner gravitron polarity generator, an anti-gravity device that also enables faster-than-light travel.
Origin
Named for the device’s effect on the magnetic moment of atoms within its field.
Source
Cities in Flight

Spinner

noun
A marque of flying automobile.
Source
Blade Runner

Spinward

adverb
In the direction of spin (of a rotating ringworld or orbital habitat.)
Source
Ringworld

Spla

adjective informal
A state of intense anger or agitation.
Origin
Possibly a truncation of dysplasia (bad formation) in reference to the idiom “bent out of shape”.
Source
The Word for World is Forest

Splicer

noun
A person who has become murderously and irreversibly insane due to excessive genetic modification.
Source
Bioshock

Starcrosser

noun
An interplanetary spacecraft.
Source
The Fifth Head of Cerberus

Supralobe

noun
The region of the human brain responsible for telepathic ability.
Source
Solar Lottery

Sweedack

interjection
Contraction of je suis d’accord.
Origin
Popularised by French Canadian hockey players in the twenty-first century.
Source
The Shockwave Rider

Synthespian

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