The structure of Earth can be defined in two ways: by mechanical properties such as rheology, or chemically. Mechanically, it can be divided into lithosphere, asthenosphere, mesospheric mantle, outer core, and the inner core. The interior of Earth is divided into 5 important layers. Chemically, Earth can be divided into the crust, upper mantle, lower mantle, outer core, and inner core.
flat dollar. Definition. A description of an absolute amount, as opposed to an amount determined as a function of another amount, such as a percentage. Most Viewed.
Princeton's WordNet(1.00 / 1 vote)Rate this definition: 1  vaulting horse, long horse, buck(noun) a gymnastic horse without pommels and with one end elongated; used lengthwise for vaulting. 2  dollar, dollar bill, one dollar bill, buck, clam(noun) a piece of paper money worth one dollar.