6 letters · 6 points in Scrabble
noun any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner
originOriginated 1925–30, formed as a Latin loanword from sentiō (“to feel”) + -tor (“-er”). By surface analysis, sense + -or.
Etymology from Wiktionary, CC BY-SA 3.0