(algebraic topology) A sequence of Abelian groups, together with a sequence of boundary homomorphisms.

plural of chain locker

(nautical) A space in the forward part of the ship, typically beneath the bow in front of the foremost collision bulkhead, that contains the anchor chain when the anchor is secured for sea.

A device that allows a door to be partially opened from the inside, whilst preventing it from being fully opened from the outside

plural of chain complex

plural of chain reaction

plural of chain gang

Either of a pair of structures built on each side of a river or harbour mouth from which defensive chains were raised or lowered

plural of chain tower

A compartment that encloses the chain and sprocket assemblies of a bicycle