Keuhkoon

Keuhkoon is the illative singular form of the Finnish noun keuhko, meaning the lung. In Finnish grammar, the illative case expresses direction toward the interior of something or movement into it, so keuhkoon translates roughly as “into the lung” or “to the lung.” The form is used in anatomical and medical language as well as in descriptive phrases about respiration and pathology.

In practice, keuhkoon appears in sentences describing location or transfer into the lung. Examples include phrases such as “veritulppa keuhkoon” (a blood clot in the lung) or “tartunta levisi keuhkoon” (the infection spread to the lung). It is part of a broader system of cases that indicate place and direction, and it contrasts with keuhkoihin, the illative plural meaning “into the lungs.”

Related forms include keuhkon (genitive singular, “of the lung”) and keuhkoihin (illative plural, “into the lungs”). The base term keuhko is used primarily in medical, anatomical, and scientific contexts, but may also appear in general health discussions. As a native Finnish noun, keuhko refers to the organ responsible for respiration, and keuhkoon is one of several inflected forms used to specify movement toward that organ.

See also: lungs, anatomy, Finnish grammar, medical Finnish terminology.