Adaptoplant

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

Agrav

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

Alternity

noun
A parallel timeline.
Origin
Abbreviated from ‘alternate reality’.
Source
Unholy Land

Anachronopede

noun
A vessel that allows the occupant to travel through time.
Origin
Derived from aná (upon), khrónos (time), and pedes (“one who walks”).
Source
The Shape of My Name

Andromorph

noun
A working animal genetically engineered to attain human likeness.
Origin
Andrós (“of man”) in combination with morphḗ (shape).
Source
Emphyrio

Anemopter

noun
A craft for travelling in the atmosphere of a gas giant.
Origin
Derived from ánemos (wind) and pteron (wing).
Source
Finisterra

Ansible

noun
A device that allows instantaneous communication over any distance.
Origin
Contraction of ‘answerable’.
Source
Rocannon’s World

Anticitizen

noun
A person who opposes the social order of the Combine.
Source
Half-Life 2

Archlight

noun
As seen from the inner surface, the reflected light from the skyward face of a ringworld.
Origin
So named because the skyward face resembles an arch overhead.
Source
Ringworld

Auntring

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

Autodarwinate

verb
To commit evolutionary self-deselection (suicide).
Origin
Charles Darwin; evolution of species by natural selection.
Source
Accelerando

Avatoid

noun
An android acting as the avatar of a ship’s Mind.
Source
Matter