1. 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; [syn: detector, sensor, sensing element]
WordNet (r) 3.0 (2006):
sensing element
n 1: 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 [syn: detector, sensor, sensing
element]