katro experimental gismu

x1 serves as / functions as / has purpose / role x2 in context / situation / matter x3.

Adds the x3 to Ilmen's older sevda, slightly modified, and adds an etymology. See also: kai'oi, le'oi, temu'i, ja'erkai.

In definition:

kai'oi
katro modal, 1st place (as a role for) a function of …
sekai'oi
katro modal, 2nd place (in role) in the role of …
tekai'oi
katro modal, 3rd place (in role context) in functional contex …