invisible

näkymätön Unable to be seen; out of sight; not visible.
(w)

To us invisible, or dimly seen / In these thy lowest works.

The teeth on an invisible zip are different from those on a conventional zip, as they are turned onto the inside so that they do not show, giving the impression of being concealed in the seam, as seen below.

(ux)

In the next section I look at some of the factors that contribute to the “invisibling” of people in later life in terms of the marginalization and splitting that occurs in providing decent psychological as well as physical care.

(rfquotek)