The term réseau derives from a French word meaning "network". It may mean:
*a network of fine lines on a glass plate, used in photographic telescopes to make a corresponding network on photographs of the stars: see Réseau plate
*a system of weather stations under a single agency, or cooperating on common goals
*an intelligence network as used by John Le Carré, in ''Tinker, Tailor, Soldier, Spy'', chapter 11.
*the Bobbin lace ground, net in bobbin lace
* SNCF TGV Réseau
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