POSS
Meaning of POSS in English
/ pɒs; NAmE pɑːs/ adjective
[ not before noun ] ( BrE , informal ) possible :
I'll be there if poss .
as soon as poss
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005