- a line on a map connecting places having equal rainfall
WordReference Random House Unabridged Dictionary of American English © 2026
i•so•hy•et
(ī′sə hī′ət),USA pronunciation n. [Meteorol.]
i′so•hy′et•al, adj.
- Meteorologya line drawn on a map connecting points having equal rainfall at a certain time or for a stated period.
- Greek hyetós rain
- iso- + -hyet 1895–1900
Collins Concise English Dictionary © HarperCollins Publishers::
isohyet /ˌaɪsəʊˈhaɪɪt/ n