Moodustusi

Moodustusi is the partitive plural form of moodustus, a Estonian term used to denote a formation, structure, or aggregation—an entity produced by the combination of parts. The concept is widely used across disciplines to refer to a discrete, organized unit.

Etymology and usage: Moodustus is formed from moodustama “to form” with the noun-forming suffix -us. The nominative plural is moodustused, while moodustusi is the partitive plural, which appears in sentences describing an unspecified amount of formations, for example “mitmeid moodustusi”. The word functions as a general label for anything that has been formed from components.

In geology, moodustused refer to natural rock or sediment structures with a recognizable origin and geometry, such as stratified layers or mineral aggregates. In biology, moodustused can describe cellular or tissue assemblies, embryonic structures, or other units that develop as a cohesive entity. In linguistics and language studies, moodustused can denote word formations or syntactic constructions—derivations, compounds, or phrase structures created by linguistic rules. In everyday Estonian, moodustusi may also describe organized groups or coalitions formed for a purpose.

Relation to related terms: Moodustus (singular) denotes the formation as a unit, moodustused is the nominative plural, and moodustusi is the partitive plural. The verb moodustama “to form” underpins the word’s usage, linking creation and structure across contexts.

See also: moodustamine, moodustused, moodustus, koostis, struktuur.