vegetation

noun4

1. •
   Plants, taken collectively.

   • There were large amounts of vegetation in the forest.
2. •
   The act or process of vegetating, or growing as a plant does; vegetable growth.
3. •
   An abnormal mass on an endocardial surface, especially a heart valve, composed chiefly of fibrin and platelets and often containing microorganisms.
4. •
   (old-fashioned) An excrescent, verrucous or fibrinous growth on a mucosal or epithelial surface.