Meaning of MOUNTING in English
/ ˈmaʊntɪŋ; NAmE / adjective , noun
[ only before noun ] increasing, often in a manner that causes or expresses anxiety
SYN growing :
mounting excitement / concern / tension
There is mounting evidence of serious effects on people's health.
= mount :
The engine came loose from its mountings.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005