sisalduma

Sisalduma is an Estonian verb meaning to be contained in, to be included within something, or to occur as part of a larger whole. It expresses the state of inclusion rather than the act of including. The form is derived from the root sisaldu- meaning to contain, with the infinitive suffix -ma, and it is closely related to the transitive verb sisaldama (to contain) as well as to related nominalizations such as sisalduse (content) and the participial adjective sisalduv (contained).

The word is most common in formal, technical, and academic language, where it is used to describe content, composition, or membership within a set, collection, document, or other whole. It can appear in passive constructions to indicate that something is present within a larger whole rather than to express the act of including something.

In terms of grammar, sisalduma behaves similarly to other Estonian verbs of its class, forming standard finite forms and participating in typical tense and mood constructions with auxiliary verbs. It is part of a family of terms related to inclusion and content, such as sisaldama (to contain), sisalduv (contained), and sisu (content or subject matter). See also: sisaldama, sisalduv, sisalduse, sisu.