Definition of vegetation noun from the Oxford Advanced Learner's Dictionary

 

vegetation

 noun
noun
BrE BrE//ˌvedʒəˈteɪʃn//
 
; NAmE NAmE//ˌvedʒəˈteɪʃn//
 
[uncountable]
 
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plants in general, especially the plants that are found in a particular area or environment The hills are covered in lush green vegetation. Desert areas have little vegetation. Word Origin mid 16th cent. (originally referring to the action or process of vegetating): from medieval Latin vegetatio(n-) ‘power of growth’, from the verb vegetare, from vegetus ‘active’, from vegere ‘be active’.Extra examples As we drove towards the desert, the vegetation became sparse. Removal of the natural vegetation has resulted in a loss of nutrients in the soil. piles of rotting vegetation
See the Oxford Advanced American Dictionary entry: vegetation