(anatomy) The part of blood circulation which carries oxygenated blood away from the heart, to the body, and returns deoxygenated blood back to the heart.

A mathematical model of a system based on the use of a linear operator.

(computing) The software associated with an operating system and supporting utilities, database systems etc.

Alternative spelling of system software

(mathematics) A numerical system of counting in tens.

Systems administrator; a person whose job it is to maintain computer or network systems.

(cartography) A system which enables a mobile receiver to determine its precise location based on signals received from a constellation of US military satellites.

Any system which enables a mobile receiver to determine its precise location based on signals received from satellites such as those of the US military, the Russian GLONASS system, or the proposed Galileo European alternative system.

plural of sysadmin

plural of solar system