Volumenometer
Pronunciation : Vol`u*me*nom"e*ter
Part of Speech : n.
Etymology : [L. volumen volume + -meter.] (Physics)
Definition : Defn: An instrument for measuring the volume of a body, especially a solid, by means of the difference in tension caused by its presence and absence in a confined portion of air.
Source : Webster's Unabridged Dictionary, 1913