Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  habitus(noun) person's predisposition to be affected by something (as a disease) the consumptive habitus. 2  physique, build, body-build, habitus(noun) constitution of the human body.
A mineral is a naturally occurring substance, representable by a chemical formula, that is usually solid and inorganic, and has a crystal structure. It is different from a rock, which can be an aggregate of minerals or non-minerals and does not have a specific chemical composition.
Classification of common rock minerals. A mineral is an inorganic, natural solid which is found in nature. Its atoms are arranged in definite patterns (an ordered internal structure) and it has a specific chemical composition that may vary within certain limits. A rock is an aggregate of one or more minerals.