(biology) A group of organs that work together as a biological system to perform one or more functions.

An extrasolar planetary system (“solar system”), a star system with exoplanets beyond our Solar System.

A person who is unduly fond of constructing systems.

plural of system-monger

The interaction of the Earth's atmosphere, hydrosphere, cryosphere, lithosphere, and biosphere, responsible for the climate.

(algebra) A set of algebraic structures (which are part of a concrete category; e.g., modules) and a set of morphisms between them (e.g., module homomorphisms) which all together form a small category which is the image of a covariant functor whose domain is a directed poset.

(politics) The global constellation of states and their relations among each other. / Ellipsis of International System of Units. (alternative letter-case form)

(zoology, anatomy) The sensory system of vertebrates that provides the brain with information about motion, head position, spatial orientation, and sense of balance.

(idiomatic) something that has a sudden and usually unpleasant effect on someone.

Synonym of game the system