Deathday

noun
The anniversary of a person’s death, celebrated posthumously by a computer simulation of the deceased.
Source
Red Dwarf

Deathdrive

noun
A type of stardrive that is claimed to kill everyone who uses it.
Source
A Vector Alphabet of Interstellar Travel

Deevee

verb
To devalue or invalidate something.
Origin
Possibly a contraction of ‘de-validate’.
Source
The Shockwave Rider

Derezz

verb
To destroy a computer program.
Origin
Abbreviation of ‘de-resolve’.
Source
Tron

Dirtgirl

noun informal
A low-status female living on Earth, not in the employ of the United Orbital Soviet.
See also
Mudboy
Source
Hardwired

Distrans

noun
A device for imprinting a message in the cry of a bird.
Origin
Abbreviated from ‘disguised transmission’.
Source
Dune

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

Droid

noun
A robot with an anthropomorphic appearance.
Origin
Abbreviation of ‘android’.
Source
Star Wars Episode IV: A New Hope

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

Embryomech

noun
A technology that can build any object from surrounding matter.
Origin
Portmanteau of ‘embryo’ and ‘mechanical’.
Source
Neom

Emmish

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

Eptification

noun
A training process in which the student is medicated into a trance-like state that results in perfect recall.
Origin
Derived from the acronym EPT (‘education for particular tasks’).
Source
Stand on Zanzibar