Koljus

Koljus is the inessive singular form of the Estonian noun kolju, which means skull. In Estonian, koljus is used to express location inside the skull, as in phrases describing anatomy or spatial relations within that part of the body. It is not a separate lexical item with its own meaning beyond the grammatical form of kolju.

In practical use, koljus appears in sentences that describe something located within the skull. A common example is: Aju asub koljus, meaning “The brain is located in the skull.” The form demonstrates how Estonian marks internal location through case endings rather than prepositions.

From a linguistic perspective, koljus illustrates how Estonian nouns change form to indicate relation to space. The root kolju carries the basic meaning “skull,” while the inessive suffix conveys “in” or “inside.” This pattern is part of broader Estonian case system, which uses various endings to signal different spatial and semantic relationships.

Summary: koljus is the grammatical form used in Estonian to say “in the skull.” It appears in anatomical and descriptive contexts and serves as an example of the language’s inessive case for indicating interior location. See also Estonian grammar, noun declension, and inessive case.