Theodical

adjective
Relating to a theodicy (discourse justifying the ways of the gods).
Origin
Derived from theós (god) and díkē (justice).
Source
Events Preceding the Helvetican Renaissance

Hilfer

noun informal
An ethnologist of high intelligence life forms.
Source
Rocannon’s World

Neantics

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

Chrownotransductionology

noun
Temporal slippage induced by chrownons; in other words: timely travel.
Origin
Professor Gladys Chrowdingler, discoverer of the chrownon.
Source
Automated Alice

Metalogical

adjective
Short form of psycho-physio-philosophilogical: relating to the mentality, morphology, and ideology of species.
Source
Look to Windward

Psychohistory

noun
A branch of mathematics dealing with the reactions of human conglomerates to fixed social and economic stimuli.
Source
Foundation