(travel, aviation) a multi-access reservation system used by the travel industry and airlines.

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.

plural of systasis

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

A backpack, worn on a space suit, that provides breathable oxygen and removes expelled carbon dioxide

The combination of different elements; synthesis. / (obsolete, rare) A union or confederation.

introductory; recommendatory