kolmepoolne
Kolmepoolne is an Estonian adjective meaning three-sided or tripartite. It describes something that involves or relates to three parties or sides. The form is built from kolm (three) and poolne (relating to a side/part). The term is used primarily in formal language, such as law, diplomacy, and business.
In practice, kolmepoolne is used to describe agreements, bodies, or processes that include three distinct participants.
Morphology and usage notes: nominative singular is kolmepoolne; genitive kolmepoolse; partitive kolmepoolset; plural nominative kolmepoolsed; plural