The definition of inbound is something that moves inward. An example of inbound is the freeway that goes toward the city center. 1  traveling or going inward.  Basketball inbounds.
Mass is a measurement of how much matter is in an object. Mass is a combination of the total number of atoms, the density of the atoms, and the type of atoms in an object. How to Measure Mass.
The definition of mass is the Liturgy of the Eucharist or a body of matter or a large amount of people or things. 1  An example of mass is a Roman Catholic church service. 2  An example of mass is a pile of clay. 3  An example of mass is a gathering of thousands of people.