Pronunciation: (kum-pres"u-bil'i-tē), [key]
—pl. -ties for 2.
1. the quality or state of being compressible.
2. Physics.the reciprocal of the bulk modulus, equal to the ratio of the fractional change in volume to the stress applied to a body.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.