1. a junction transistor having an n-type semiconductor between a p-type semiconductor that serves as an emitter and a p-type semiconductor that serves as a collector;
WordNet (r) 3.0 (2006):
p-n-p transistor
n 1: a junction transistor having an n-type semiconductor
between a p-type semiconductor that serves as an emitter
and a p-type semiconductor that serves as a collector