|a gadget; dingus; thingumbob.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
|1.||a large coherent body of matter without a definite shape|
|2.||a collection of the component parts of something|
|3.||a large amount or number, such as a great body of people|
|4.||the main part or majority: the mass of the people voted against the government's policy|
|5.||in the mass in the main; collectively|
|6.||the size of a body; bulk|
|7.||physics inertial mass See also gravitational mass a physical quantity expressing the amount of matter in a body. It is a measure of a body's resistance to changes in velocity (inertial mass) and also of the force experienced in a gravitational field (gravitational mass): according to the theory of relativity, inertial and gravitational masses are equal|
|8.||(in painting, drawing, etc) an area of unified colour, shade, or intensity, usually denoting a solid form or plane|
|9.||pharmacol a pastelike composition of drugs from which pills are made|
|10.||mining an irregular deposit of ore not occurring in veins|
|11.||done or occurring on a large scale: mass hysteria; mass radiography|
|12.||consisting of a mass or large number, esp of people: a mass meeting|
|13.||to form (people or things) or (of people or things) to join together into a mass: the crowd massed outside the embassy|
|[C14: from Old French masse, from Latin massa that which forms a lump, from Greek maza barley cake; perhaps related to Greek massein to knead]|
|Mass (mæs, mɑːs)|
|1.||High Mass See also Low Mass (in the Roman Catholic Church and certain Protestant Churches) the celebration of the Eucharist|
|2.||a musical setting of those parts of the Eucharistic service sung by choir or congregation|
|[Old English mæsse, from Church Latin missa, ultimately from Latin mittere to send away; perhaps derived from the concluding dismissal in the Roman Mass, Ite, missa est, Go, it is the dismissal]|
A unified body of matter with no specific shape.
A grouping of individual parts or elements that compose a unified body of unspecified size or quantity.
The physical volume or bulk of a solid body.
One of the seven fundamental SI units, the kilogram.
|mass (mās) Pronunciation Key
A measure of the amount of matter contained in or constituting a physical body. In classical mechanics, the mass of an object is related to the force required to accelerate it and hence is related to its inertia, and is essential to Newton's laws of motion. Objects that have mass interact with each other through the force of gravity. In Special Relativity, the observed mass of an object is dependent on its velocity with respect to the observer, with higher velocity entailing higher observed mass. Mass is measured in many different units; in most scientific applications, the SI unit of kilogram is used. See Note at weight. See also rest energy, General Relativity.