tactile (adj.)youdaoicibaDictYouDict[tactile 词源字典]
1610s, "perceptible to touch," from French tactile (16c.) and directly from Latin tactilis "tangible, that may be touched," from tactus, past participle of tangere "to touch" (see tangent (adj.)). Meaning "of or pertaining to the sense of touch" is attested from 1650s. Related: Tactility.[tactile etymology, tactile origin, 英语词源]