ɔːˈrɒɡrɑːf, ɔːˈrɔːɡrɑːf

Definitions

1. noun

A chart or map showing the distribution of rainfall or other meteorological elements over a particular area, especially a mountainous region.

“The orograph showed a clear pattern of increased rainfall near the mountain peaks.”

2. noun

An instrument or device used for measuring or recording rainfall or other meteorological elements in a particular area, especially a mountainous region.

“The researchers used an orograph to collect data on the rainfall patterns in the valley.”