[noun] a series of things depending on each other as if linked together; "the chain of command"; "a complicated concatenation of circumstances" Synonyms:concatenation
[noun] (chemistry) a series of linked atoms (generally in an organic molecule) Synonyms:chemical
[noun] a series of (usually metal) rings or links fitted into one another to make a flexible ligament
[noun] a number of similar establishments (stores or restaurants or banks or hotels or theaters) under one ownership
[noun] anything that acts as a restraint
[noun] a unit of length
[noun] British biochemist (born in Germany) who isolated and purified penicillin, which had been discovered in 1928 by Sir Alexander Fleming (1906-1979) Synonyms:Chain, Ernst Boris Chain, Sir Ernst Boris Chain