(1) Inactivity that is passive and monotonous, comparable to the inactivity of plant life
"Their holiday was spent in sleep and vegetation"
(2) An abnormal growth or excrescence (especially a warty excrescence on the valves of the heart)
(3) All the plant life in a particular region or period
"The flora of southern California"
"The botany of China"
(4) The process of growth in plants
- Plants collectively.
- There were large amounts of vegetation in the forest.