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p.e.
p/e ratio
p/e ratio-to-EPS growth
P.G.
P & L
P&L management
p.m.
P-mail
p-n junction
p-n-p transistor
p.o. (1)
p.o. (2)
p & p
P&S
p’s and q’s
p.t.
p-type
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p-n junction
p-n junction (plural p-n junctions)


noun 
Definition:
 
boundary between different semiconductor types: the boundary between an n-type semiconductor and a p-type semiconductor having rectifying characteristics and used in diodes
Encarta® World English Dictionary [World English Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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