mass (măs)

1. A unified body of matter with no specific shape.
2. A grouping of individual parts or elements that compose a unified body of unspecified size or quantity.
3. The physical volume or bulk of a solid body.
4. Abbr. m The measure of the quantity of matter that a body or an object contains. The mass of the body is not dependent on gravity and therefore is different from but proportional to its weight.
5. A thick, pasty pharmacological mixture containing drugs from which pills are formed.
6. One of the seven fundamental SI units, the kilogram.
7. See massa.