volumenometer


From The Collaborative International Dictionary of English v.0.48:

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]
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