lääneosa

Lääneosa is an Estonian noun meaning "the western part" of something. It is formed from lään- meaning west and osa meaning part. The term is used across geography, cartography, planning and everyday language to describe the western portion of a region, country, city, natural feature, or administrative area. Because it is a relative description, the precise area referred to as the lääneosa depends on context and purpose; boundaries may be natural, political, or statistical.

In maps and data reports, lääneosa helps compare western and eastern segments of a unit (for example, the western part of a country or the western part of a city). The opposite directions have parallel terms: põhjaosa (northern part), idaosa (eastern part), and lõunaosa (southern part). The term is typically descriptive rather than an official administrative designation, unless a specific document defines its scope.

In everyday Estonian, you might encounter phrases like "lääneosa linnast" or "lääneosa riigist" to indicate the western portion. See also related directional terms such as põhjaosa, idaosa and lõunaosa.