Siseruumne

Siseruumne is an Estonian adjective meaning "indoor" or "interior," used to describe attributes relating to the inside of a building or enclosed space. It is formed from sise- (inner) and ruum (space, room) with the adjectival suffix -ne, and it serves to distinguish interior conditions or components from exterior ones. The term is common in architecture, construction, HVAC, and product labeling.

In usage, siseruumne describes various environmental aspects or features of indoor environments. Examples include siseruumne temperatuur (indoor temperature), siseruumne õhk (indoor air), siseruumne valgustus (indoor lighting), and siseruumne kliima (interior climate). It can also modify nouns for interior spaces, such as siseruumid (indoor spaces) or siseruumne tolm (indoor dust). The opposite terms are typically formed with välis- to denote outdoor or exterior contexts.

The word is used in both technical contexts—building codes, energy efficiency discussions, and environmental control—and in everyday language when describing conditions inside buildings. Although closely related to nouns like siseruum and siseruumid, the adjective siseruumne specifically characterizes properties associated with the interior rather than with exterior spaces.