Hajumisest

Hajumisest is an Estonian inflected form meaning "from the dispersal" or "about the dispersal," derived from the noun hajumine ("dispersal, scattering, decomposition"). Morphologically it combines the verb stem hajuma ("to scatter, to disperse") with the nominalizing suffix -mine and the elative/ablative case ending -st, which marks origin or the topic of discussion.

In usage, hajumisest can indicate physical departure or separation (e.g., movement away from a point), a process of breaking apart or dissolving in scientific contexts, or the subject matter of speech and writing. Typical fields of use include physics (light or particle dispersion), chemistry (dissolution, degradation), ecology (species dispersal), and social studies (fragmentation of groups or ideas).

Examples:

- Ta rääkis hajumisest laborikatsetel. (He/she talked about the dispersal in laboratory experiments.)

- Gaasi hajumisest ruumis kirjeldas uuring. (The study described the gas dispersal in the room.)

Hajumisest is cognate with related forms in other Finnic languages (for example Finnish hajumisesta) and reflects common Finno-Ugric morphological patterns of verb-derived nouns and case marking. As a grammatical form, its precise meaning depends on context and the governing verb or preposition: it can mark the source of movement or serve as the object of verbs meaning "to speak about" or "to know about."