Full Definition of AUTISM. : a variable developmental disorder that appears by age three and is characterized by impairment of the ability to form normal social relationships, by impairment of the ability to communicate with others, and by stereotyped behavior patterns.â auÂ·tisÂ·tic \oÌ-Ëtis-tik\ adjective or noun. a variable developmental disorder that appears by age three and is characterized by impairment of the ability to form normal social relationships, by impairment of the ability to communicate with others, and by stereotyped behavior patterns.
Other organizations have established a variety of alternative definitions for their standard reference conditions. In chemistry, IUPAC has established two standards: standard temperature and pressure (STP) as a temperature of 273.15 K (0 Â°C, 32 Â°F) and an absolute pressure of exactly 100 kPa (1 bar).
1 A comfortable room temperature would be around 70 degrees Fahrenheit, or 21 degrees Celsius. 2  A pot of boiling water is 212 degrees Fahrenheit, or 100 degrees Celsius. 3  A cold and windy winter day would have a chill factor that might be below freezing at 23 degrees Fahrenheit, or -5 degrees Celsius. The range from freezing point to boiling point on this scale is 32 to 212 degrees. 2  The other scale is measured in degrees Celsius. 3  Sometimes it is called the Centigrade scale. 4  The range from freezing point to boiling point on this scale is 0 to 100 degrees.