mesoscale

[mez-uh-skeyl, mes-, mee-zuh-, -suh-]
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.

Origin:
1955–60; meso- + scale3

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Dictionary.com's 21st Century Lexicon
Main Entry:  mesoscale
Part of Speech:  n, adj
Definition:  in meteorology, the scale of phenomena that range in size from 1-100 km (.7-67 mi), intermediate between small (single storm clouds) and synoptic scales
Example:  Squall lines, MCCs, and MCSs are examples of mesoscale weather systems.
Etymology:  meso- 'middle' + scale
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Example sentences
But in between is a poorly studied cosmic mesoscale.
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