def

gasoline

Petroleum derived liquid used as a fuel source

meta

supertypes

marker

Marker labels a dict with typing information

    phenomenon

Aspect of scientific interest with measurable quantities

        substance

Matter in one the three states solid, liquid, or gas

            fluid

Liquid or gas

                liquid

Substance with definite volume but takes the shape of its container

quantities

flow

Measure of volumetric flow of fluid

level

Fill level of a vessel containing a fluid where 0% is empty and 100% is filled

pressure

Measure of force applied

temp

Temperature - measure of hot and cold