bulk modulus: the ratio of the change in pressure acting on a volume to the fractional change in volume
coefficient of elasticity: (physics) the ratio of the applied stress to the change in shape of an elastic body
east india company: an English company formed in 1600 to develop trade with the new British colonies in India and southeastern Asia; in the 18th century it assumed administrative control of Bengal and held it until the British army took over in 1858 after the Indian Mutiny