vegetation in WordNet English dictionary

1. all the plant life in a particular region or period
   "Pleistocene vegetation"; "the flora of southern California"; "the botany of China"
   vegetation  flora  botany 
   
2. inactivity that is passive and monotonous, comparable to the inactivity of plant life
   "their holiday was spent in sleep and vegetation"
   vegetation 
   
3. an abnormal growth or excrescence (especially a warty excrescence on the valves of the heart)
   vegetation 
   
4. the process of growth in plants
   vegetation