The hierarchical organization of the kitchen staff in a restaurant into small teams or individuals, each responsible for a type of food (starters, mains etc) under the overall control of a head chef.

An arrangement whereby the main responsibility for welfare payments, especially unemployment benefits, is held by trade or labour unions rather than a government agency.

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

A refrigeration system that utilizes ammonia being absorbed by water, to create the cooling effect.

(rail transport) A rail system used in mountainous terrain with multiple cograils.

(crystallography) Any of the seven distinct symmetry classifications of crystals: cubic, tetragonal, hexagonal, orthorhombic, monoclinic, triclinic and trigonal.

(linguistics) A system for writing one or more languages; a particular alphabetic, syllabic, logographic, or other scheme. For example, the Latin alphabet or the Cyrillic alphabet.

(astronomy) Two gravitationally connected stars or other celestial objects which orbit around their center of mass.

A socioeconomic system that encompasses part or all of the globe and is typically larger than a single country.

present participle of beat the system