top of page


Published: 1st September 2021

Citation: Astronist Institution. (2021). Ephemeralism. Available: Last accessed [enter date e.g. 1st Sept 2021].


noun  Astroeschatology

the astronaturalist belief that an irremovable characteristic of human nature is its transience due to the laws of limitation of The Cosmos; as a result, concepts such as physical immortality or an eternal afterlife are rejected.


Astronic mortalism
Ephemeralist | ɪˈ fɛm(ə)r(ə)lɪst | noun
Ephemeralistic | ɪˈ fɛm(ə)r(ə)lɪstɪk | adjective
Ephemeralistically | ɪˈ fɛm(ə)r(ə)lɪstɪkəli | adverb
Sublunist | sʌblʌnɪst | adjective & noun


Astro-English: from Astronese, the word ephemeralism is formed by use of the adjective ephemeral denoting “a very short time” or something “transitory” rather than permanence; using the suffix -ism denotes the formalisation of this concept of transience into a belief.

Encyclopaedic entry for “Ephemeralism” on

© 2021 by the Astronist Institution.

Notice: Each definition, extended description and etymological description found on is under copyright protection of the Astronist Institution and therefore should not be used elsewhere except in direct quotation along with a reference to its respective definition page on Exempt from this copyright protection are the words being defined themselves, unless otherwise stipulated with the tag trademark in which the use of such a word for your own commercial purposes is likely a breach of copyright.

bottom of page