Öffnungs
Öffnungs is a German combining form used in technical and scientific terms to denote an opening or aperture. It is not ordinarily used as an independent word in contemporary German, but appears as the stem of nouns formed from Öffnung when combined with other words. The base noun Öffnung means opening, aperture, or gap, and is derived from the verb öffnen.
The stem Öffnungs- appears in a range of compound terms. Common examples include Öffnungsgrad, referring to
Usage notes: The connecting form is usually written as a continuous compound, without spaces or hyphens, for