A country in North America, stretching from the Atlantic to the Pacific Ocean, and including Alaska, Hawaii, and several territories.

A country in Western Asia, in the Middle East.

(historical) Name of the country of Brazil between 1937 and 1967.

(US, geography) The portion of the United States which is located on the North American continent; the United States exclusive of Hawaii and other overseas territories.

The official name of Tanzania, a country in East Africa.

An expansive region encompassing the southeastern and south-central part of the United States, typically defined as including the states of Texas, Oklahoma, Louisiana, Arkansas, Alabama, Mississippi, Tennessee, Kentucky, Florida, Georgia, North Carolina, South Carolina, West Virginia, and Virginia, sometimes also Maryland, Delaware, Washington, D.C., and Missouri.

Synonym of base unit (“unit of measurement”).

plural of unit cell

A standard unit of a currency, of which the value of coins or notes are multiples

Any of the various units to measure electricity and magnetism in the CGS (now replaced by SI) system of units; abbreviated emu, e.m.u., or EMU.