Koostumuskoostumus

Koostumuskoostumus is a coined term used in Estonian-language discussions to illustrate the repetition of a base word within a compound word. The base word 'koostumus' broadly means composition or makeup, so the combined form literally translates to 'composition composition.' It is not an established term in standard dictionaries but appears in linguistic examples and word-formation demonstrations.

The term is formed by reduplication of the stem 'koostumus'. It shows how languages can create emphasis or illustrate nested compounding. It is not a productive part of Estonian word formation and is primarily of theoretical or humorous interest.

In practice, koostumuskoostumus is used as an illustrative or meta-linguistic device in articles, teaching notes, or discussions about morphology. It can help explain how a morpheme might recur inside a larger compound or how a tautological structure can arise when a word repeats itself within a word.

Related concepts include reduplication, tautology in linguistics, and the study of compound word formation.