Columbia Encyclopedia

Search results

500 results found

circulatory system

(Encyclopedia)CE5 Circulatory system circulatory system, group of organs that transport blood and the substances it carries to and from all parts of the body. The circulatory system can be considered as compose...

endocrine system

(Encyclopedia)endocrine system ĕnˈdəkrĭn [key], body control system composed of a group of glands that maintain a stable internal environment by producing chemical regulatory substances called hormones. The end...

expert system

(Encyclopedia)expert system, a computer system or program that uses artificial intelligence techniques to solve problems that ordinarily require a knowledgeable human. The method used to construct such systems, kno...

seignorial system

(Encyclopedia)seignorial system: see manorial system; feudalism. ...

Bach system

(Encyclopedia)Bach system: see Bach, Alexander.

portal system

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

banner system

(Encyclopedia)banner system, Manchu conscription system. Companies of Manchu warriors were grouped (1601) into brigades, each with a distinctive banner. The banner system integrated former tribal units into a burea...

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...

Browse by Subject