Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
pesto
PET (1)
PET (2)
pet (1)
pet (2)
pet name
pet peeve
PET scan
peta-
petabyte
-petal
petal
petaliferous
pétanque
petard
Petavius
petcock
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

peta-
peta-


prefix 
Definition:
 
1. one million billion: one million billion (1015)
Symbol  P
petabyte
2. in the binary system, a quadrillion (250)
[Alteration of penta-; because it represents 1,000 to the fifth power]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft