'Volumenometer' definitions:

Definition of 'Volumenometer'

From: GCIDE

Volumenometer \Vol`u*me*nom"e*ter\, n. [L. volumen volume + -meter.] (Physics) 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. [1913 Webster]