Exoterre

noun
A species not originating from the planet Terre.
Origin
Formed from éxō (foreign) and terra (ground).
Source
Embassytown

Auntring

noun
A community of women and children without an adult male presence.
Source
Solitude

Hearthmate

noun
One’s fellow resident in a shared household.
Source
Coming of Age in Karhide

Farborn

noun archaic
A person not native to the planet they are inhabiting.
Source
Planet of Exile

Urbapt

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

Neighborling

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

Manhome

noun proper
The Earth.
Source
Norstrilia

Adaptoplant

noun
Seasonal vegetation that grows into irregular temporary housing.
Origin
Pairing of ‘adapt’ and ‘plant’.
Source
Central Station

Downwell

adjective
Short form of the phrase “down the gravity well” – i.e. located on the surface of a planet.
adverb
From orbit to the surface of a planet.
Source
Accelerando

Burbclave

noun
A fortified private surburb with its own by-laws and police force.
Origin
Portmanteau of ‘suburb’ and ‘enclave’.
Source
Snow Crash

Nestworld

noun
A type of artificial habitat composed of multiple twisting tubes, complexly intertwined.
Source
Matter

Shellworld

noun
An artificial planet comprising a solid core surrounded by a concentric succession of spherical shells.
Source
Matter