vegetation

noun

1. 1

   inactivity that is passive and monotonous, comparable to the inactivity of plant life

   their holiday was spent in sleep and vegetation

2. 2

   an abnormal growth or excrescence (especially a warty excrescence on the valves of the heart)

3. 3

   all the plant life in a particular region or period

   Pleistocene vegetation

   the flora of southern California

4. 4

   the process of growth in plants