Thanks Moogie - senient = stay in one place as in Tribal (Tribel??sp) Home.
No.
Sentient = able to perceive or feel things.
In science fiction, an alien, android, robot or computer who is described as "sentient" is often ascribed qualities such as will, desire, consciousness, ethics, personality, intelligence, insight, and so on. Sentience is being used in this context to describe an essential human property that brings all these other qualities with it.
You are probably thinking of...
Sessile = fixed in one place; immobile.
... or...
Sedentary = tending to spend much time seated; somewhat inactive.