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hythergraph

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

noun

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


Etymology

Origin of hythergraph

First recorded in 1915–20; hy(dr)- 1 + -ther(m) + -graph