vegetate + -ation

source: Studio Ghibli GIF - Find & Share on GIPHY

1. plants considered collectively, especially those found in a particular area or habitat:

｟かたく｠ 〖集合的に〗(ある地域の)植物, 草木; 植生

e.g. the chalk cliffs are mainly sheer with little vegetation.

2. the action or process of vegetating.

(植物の)成長, 繁茂.

3. Medicine an abnormal growth on or in the body.

〘医〙 病的増殖

vegetational |-SHənl| adjective

mid 16th century (in vegetation (sense 2)): from medieval Latin vegetatio(n-) ‘power of growth’, from the verb vegetare (see vegetate).