noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A line of equal rainfall on a map or chart, such as a weather map.

   "On the yearly rainfall map, the 10-inch (250 mm) isohyet separates viable cropland from desert."

Example

More examples

"On the yearly rainfall map, the 10-inch (250 mm) isohyet separates viable cropland from desert."

Etymology

From iso- + Ancient Greek ὑετός (huetós, “rain”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.