chain

British biochemist (born in Germany) who isolated and purified penicillin, which had been discovered in 1928 by Sir Alexander Fleming (1906-1979).

(business) a number of similar establishments (stores or restaurants or banks or hotels or theaters) under one ownership.

A necklace made by stringing objects together.

(chemistry) a series of linked atoms (generally in an organic molecule).

A series of hills or mountains.

A series of things depending on each other as if linked together.

“the chain of command”

A linked or connected series of objects.

“a chain of daisies”

Anything that acts as a restraint.

A series of (usually metal) rings or links fitted into one another to make a flexible ligament.

A unit of length.

Connect or arrange into a chain by linking.

Fasten or secure with chains.