Necrosphere

noun
An airborne swarm of self-organising inanimate matter.
Origin
Nekrós (“the dead”).
Source
The Invincible

Neantics

noun
The ontology of nothingness.
Origin
Derived from neán (young).
Source
The Sanatorium of Dr Vliperdius

Cosmeg

noun
A single star containing all the mass in the universe.
Origin
Abbreviated from ‘cosmic egg’.
Source
The Gods Themselves

Emmish

adjective informal
Behaviour characteristic of an Emotional (as distinct from a Parental or a Rational).
Source
The Gods Themselves

Batcar

noun
A battery-powered vehicle.
Source
The Lathe of Heaven

Urbapt

noun
An apartment in a high-density urban zone.
Source
True Names

Psychopraxiscope

noun
A device purported to offer instantaneous viewing of any subject’s thoughts.
Source
Great Breakthroughs in Darkness

Chiaroscurography

noun
The photographic process invented by Leonardo da Vinci.
Origin
Formed from chiaro (bright), scuro (dark), and gráphō (to draw).
Source
Bruno’s Shadow

Neighborling

noun
A cohabitant from a lower level of the great indoors.
Source
Love Comes to the Middleman

Godshatter

noun
Fragments of a superintelligence melded with a human-level intellect.
Source
A Fire Upon the Deep

Agrav

noun
A material producing an anti-gravity effect.
Source
A Fire Upon the Deep

Manhome

noun proper
The Earth.
Source
Norstrilia