Dictionary.net

• 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

2006 - WordNet 3.0
By Princeton University

• 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

2011 - English Dictionary Database
By DataStellar Co., Ltd