Elatrometer

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Elatrometer \El`a*trom"e*ter\, n. [Gr. ? a driver + -meter.]
     (Physics)
     An instrument for measuring the degree of rarefaction of air
     contained in the receiver of an air pump. [Spelt also
     {elaterometer}.]
     [1913 Webster]