hyetograph

[ hahy-et-uh-graf, -grahf, hahy-i-tuh- ]

noun

1. a map or chart showing the average rainfall for the localities represented.

hyetograph

/ ˈhaɪɪtəˌɡrɑːf; -ˌɡræf /

noun

1. a chart showing the distribution of rainfall of a particular area, usually throughout a year
2. a self-recording rain gauge

Word History and Origins

Origin of hyetograph¹

hyeto- + -graph