'Isohyet' definitions:

Definition of 'isohyet'

From: GCIDE

Isohyetose \I`so*hy"e*tose`\, a. [Iso- + Gr. "yeto`s rain.] (Phys. Geog.) Of or pertaining to lines connecting places on the earth's surface which have the same mean annual rainfall. -- n. An isohyetose line; called also isohyet. [1913 Webster]