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).
Thus an oral temperature, measured with a thermometer placed under the tongue, is the most convenient and comfortable type of temperature measurement for adults. A normal oral temperature is 98.6Â°F or 37.0 Â°C. This is the accepted standard temperature for the normal body temperature.External measure of the bodyâs temperature such as axillary, tympanic membrane or skin temperatures are the least accurate and may take hours to reflect true changes in the bodyâs core temperature. r ectal temperatures is an internal measurement taken in the rectum, and is slightly higher at 99.6 Â°F or 37.6 Â°C. This is the best and most accurate measure of the bodyâs temperature. A rectal temperature can be taken on individuals of all ages, but it may be uncomfortable.