Search Result for "comfort zone":
Wordnet 3.0

NOUN (1)

1. the temperature range (between 28 and 30 degrees Centigrade) at which the naked human body is able to maintain a heat balance without shivering or sweating; 



WordNet (r) 3.0 (2006):

comfort zone
    n 1: the temperature range (between 28 and 30 degrees
         Centigrade) at which the naked human body is able to
         maintain a heat balance without shivering or sweating