mesoscale

[ mez-uh-skeyl, mes-, mee-zuh-, -suh- ]
/ ˈmɛz əˌskeɪl, ˈmɛs-, ˈmi zə-, -sə- /

adjective

pertaining to meteorological phenomena, such as wind circulation and cloud patterns, that are about 1–100 km (0.6–60 miles) in horizontal extent.

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Origin of mesoscale

First recorded in 1955–60; meso- + scale3
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020