NCIt definition : A non-SI unit of energy defined as the amount of heat required to raise the temperature
of one gram of pure water by one degree Centigrade under standard conditions (the
specific heat of the water at 3.98, 14.5, or 19.5 degrees Celcius and the constant
pressure of 101.325 kPa or one atm being defined as unity), equal to approximately
4.184 J. According to the current national standard in the United States (IEEE/ASTM
SI 10 TM-2002. American National Standard for Use of the International System of Units
(SI): The Modern Metric System, New York: IEEE, 2002) the calorie in any form is not
to be used. Joules should be used instead.;
Alternative definition : CDISC: A measurement of nutritional energy. The quantity of thermal energy required
to raise one gram of water one degree Centigrade under standard conditions. 1 calorie
equals 4.186 joules. (NCI);
Currated CISMeF NLP mapping