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gregaria

noun gre·gar·ia \ grə̇ˈga(a)rēə \

Definition of gregaria

plural -s
: an irregularly recurrent phase in the life cycle of migratory or plague grasshoppers induced by crowded breeding conditions and marked by structural and color changes and the development of strongly gregarious behavior — compare solitaria

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Origin and Etymology of gregaria

New Latin, from Latin, feminine of gregarius

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