资料来源 : Webster's Revised Unabridged Dictionary (1913)

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.