The amount of energy needed to raise the temperature of a gram of water by a degree centigrade: a unit of measure of energy.

The amount of energy needed to raise the temperature of a kilogram of water by a degree centigrade: a unit of measure of energy.

Of a diet, involving eating a lower number of calories than would normally eaten, usually with the intention of losing weight. / Of a food or drink, having fewer calories than its standard form.

aware of the calorie content of ones diet

(colloquial) Food that contains an excessive and usually unhealthy amount of calories.

plural of calorie bomb

A non-SI unit of energy equivalent to 4.184 joules.

Full of calories.