"concave" in German concave hohl konkav Detailed translations for "concave" concave 1. general concave(also: hollow, vain, cupped, cavernous) hohl{adjectiv} 2. mathematics concave konkav{adjectiv} They need to be concave to make implosion work. Source: opensubtitles.org Corpus by OPUS Request review Sie müssen konkav sein, damit die Implosion klappt.