hythergraph

[ hahy-ther-graf, -grahf ]
/ ˈhaɪ θərˌgræf, -ˌgrɑf /

noun

a climatic graph showing relationships between temperature and humidity or temperature and precipitation.

Origin of hythergraph

First recorded in 1915–20; hy(dr)-1 + -ther(m) + -graph
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019