Musculator

noun
A creature that contracts its body when one end is in fresh water and the other in salt water, bred for use as a pump or motor.
Source
The Crucible of Time

Nervograp

noun
Specialised animal tissue bred to transmit signals over long distances.
Source
The Crucible of Time

Aurelac

noun
A subterranean organism resembling a botanical rhizome, known to produce valuable pearl-like stones.
Origin
Derived from aureus (golden) and lac (milk).
Source
Prospect

Wormword

noun
A word, which when spoken inveigles its way into the mind of the speaker and manifests itself in his flesh.
Origin
Named for the parasitic manifestation caused by the word.
Source
Entry Taken from a Medical Encyclopedia

Mockman

noun
An animal bred for slavery, genetically similar to a human.
Source
Good Mountain

Vitrifax

noun
A device able to freeze a person in a cylinder of liquid nitrogen to preserve the body in case of catastrophe.
Origin
Formed from vitri (glass) and ‘fax’ – fac simile (“make like”).
Source
Fiasco

Wethead

noun informal
A person without cybernetic brain implants.
Source
The Star Surgeon’s Apprentice

Exoterre

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

Dromozoa

noun plural
Fast moving symbiotic organisms that invade the human body and cause it to grow new parts.
Origin
Derived from drómos (running) and zôion (animal).
Source
A Planet Named Shayol

Nakalchi

noun
A bio-synthetic being spawned from a mother-machine.
Origin
Naqal (imitation).
Source
Oblivion: A Journey

Godshatter

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

Ziphead

noun informal
A person who has been made into a cognitive computer.
Source
A Deepness in the Sky