definition of
vegetation

[1] #1 vegetation n. [flora, botany] all the plant life in a particular region or period; "Pleistocene vegetation"; "the flora of southern California"; "the botany of China". wn

[2] #2 vegetation n. the process of growth in plants. wn

[3] #3 vegetation n. an abnormal growth or excrescence (especially a warty excrescence on the valves of the heart). wn

[4] #4 vegetation n. inactivity that is passive and monotonous, comparable to the inactivity of plant life; "their holiday was spent in sleep and vegetation". wn