Caloric n. : The principle of heat, or the agent to which the phenomena of heat and combustion were formerly ascribed; -- not now used in scientific nomenclature, but sometimes used as a general term for heat.

Caloric a. : Of or pertaining to caloric.

Example:
What is the Caloric content of orotic acid when consumed by a human?

Taxonomy
caloric theory, heat, caloric, called caloric, experiments, explanations, particles, free encyclopedia, flows, combustion, the substance, theory, gas, bodies, 19th century, continuous fluid, the 19th century, Antoine Lavoisier.

Defination from the web:
Caloric was also thought of as a weightless gas that could pass in and out of pores in solids and liquids. The "caloric theory" was superseded by the mid-19th century in favor of the theory of heat but nevertheless persisted in scientific literature ...