Search Result for "borderline intelligence":
Wordnet 3.0

NOUN (1)

1. the minimal IQ required for someone to function normally and independently in the world (without some form of institutional assistance); 



WordNet (r) 3.0 (2006):

borderline intelligence
    n 1: the minimal IQ required for someone to function normally
         and independently in the world (without some form of
         institutional assistance)