Main Entry: sys·tem

Pronunciation: \ˈsis-təm\

Function: noun

1 a : a group of body organs or structures that together perform one or more vital functions—see circulatory system, digestive system, endocrine system, limbic system, nervous system, reproductive system, respiratory system b : the body considered as a functional unit
2 : a manner of classifying, symbolizing, or schematizing <a taxonomic system>