Definitionen
1.AdjectiveExperiencing sensation, thought, or feeling."Consider fish, who are apparently sentient yet cognitively extremely primitive in comparison with humans.; Obviously, other morally relevant considerations would apply to the case of a sentient fetus, as by acquiring sentience it acquires interests and moral status."
2.AdjectiveAble to consciously perceive through the use of sense faculties.
3.AdjectivePossessing human-like awareness and intelligence.
4.NounLifeform with the capability to feel sensation, such as pain.
5.NounAn intelligent, self-aware being.