(computer hardware) The part of a computer that fetches, decodes and executes instructions; attached directly to the memory.

(physics) A constant used as a unit of measurement for particle spin, equal to Planck's constant divided by 2π.

A government agency found in many countries, responsible for investigating and preventing criminal manipulation of finance systems.

(mathematics) The function whose value is zero if its independent variable is negative, and one otherwise.

A device that is placed over or behind the propeller of a boat to deflect the vessel's propwash downward. The result is a very effective form of agitation dredging. PDUs are primarily used by salvors to remove mud or sand from shallow water shipwrecks.

(computer hardware) the section of a CPU that performs calculations and logical operations

(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.

Laborers are encouraged to unionize or otherwise engage in collective action on a global scale in order to use the strength of their numbers to obtain better conditions.

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

(US) A police dog or a police dog and its handler.