Entry 2 senses · 2 variants Webster, 1913 Sentient · Sen·ti·ent · IPA /ˈsɛn.ʃi.ənt/ a. n. 01 a. Having a faculty, or faculties, of sensation and perception. 1. Having a faculty, or faculties, of sensation and perception.(Physiol.) 02 n. One who has the faculty of perception; a sentient being. 1. One who has the faculty of perception; a sentient being.