a.

1. 坐著的；需要（或慣於）久坐不動的
   To maintain a sedentary posture over a long period is detrimental to your health.

   長時間靜坐的姿勢對身體是有害的。

   I'm bored with sedentary work.

   我對坐著做的工作已經膩了。

2. （鳥等）定棲的；（貝殼）固定附著的

adj.

1. tending to spend much time seated.
   ▸(of work or a way of life) characterized by much sitting and little physical exercise.
   ▸sitting.
2. Zoology  & Anthropology  inhabiting the same locality throughout life.
3. Zoology  sessile.