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.
Definition of MINERAL for Kids. 1. : a naturally occurring solid substance (as diamond, gold, or quartz) that is not of plant or animal origin. 2. : a naturally occurring substance (as ore, coal, salt, or petroleum) obtained from the ground usually for humans to use. a naturally occurring solid substance (as diamond, gold, or quartz) that is not of plant or animal origin. 2. : a naturally occurring substance (as ore, coal, salt, or petroleum) obtained from the ground usually for humans to use.