(cosmology) the spherical region of the observable universe surrounding an observer beyond which objects recede from that observer at a rate greater than the speed of light due to the expansion of the Universe.

plural of Hubble volume

past participle of speak volumes

A diagram used to describe corresponding changes in volume and pressure in a system, commonly used in thermodynamics and physiology.

plural of pressure volume diagram

A measure of the concentration of a solution obtained by dividing the mass of the solute by the volume of the solution and multiplying by one hundred. Often abbreviated to w/v(%).