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Ptolemaic system

(Encyclopedia)Ptolemaic system tŏlˌəmāˈĭk [key], historically the most influential of the geocentric cosmological theories, i.e., theories that placed the earth motionless at the center of the universe with a...

reproductive system

(Encyclopedia)CE5 Reproductive system reproductive system, in animals, the anatomical organs concerned with production of offspring. In humans and other mammals the female reproductive system produces the femal...

respiratory system

(Encyclopedia)respiratory system: see respiration. ...

portal system

(Encyclopedia)portal system: see circulatory system. ...

SI, abbreviation for the International System of Units

(Encyclopedia)SI: see International System of Units. ...

euro

(Encyclopedia)euro: see European Monetary System. ...

European Currency Unit

(Encyclopedia)European Currency Unit: see European Monetary System. ...

European Central Bank

(Encyclopedia)European Central Bank: see under European Monetary System. ...

finance

(Encyclopedia)finance, theory and practice of conducting large public and private dealings in money. Important institutions of private finance include those that deal with insurance, banking, stocks (see stock), bo...

Mundell, Robert A.

(Encyclopedia)Mundell, Robert A., 1932–2021, Canadian economist, b. Kingston, Ont., Massachusetts Institute of Technology (Ph.D. , 1956). He taught at a number of u...