'Lysimeter' definitions:

Definition of 'Lysimeter'

From: GCIDE

Lysimeter \Ly*sim"e*ter\ (l[-i]*s[i^]m"[-e]*t[~e]r), n. [Gr. ly`sis a loosing + -meter.] An instrument for measuring the water that percolates through a certain depth of soil. --Knight. [1913 Webster]