katto

Katto is a common noun in Finnish that translates to “roof” or “ceiling” in English. It refers to the top covering of a building from the outside, or the interior ceiling, depending on context. In ordinary speech, the intended meaning is inferred from surrounding words.

In construction and architecture, katto denotes roofing elements and the upper structure that shelters the interior. It appears in many compound terms describing materials, repairs, and features related to building envelopes.

As a proper noun, Katto may appear as a surname or as a place name in various regions, with capitalization signaling its use as a name rather than a common noun. The term’s meaning remains tied to the concept of “roof” or “ceiling” when used in Finnish prose.