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perinephrium
perineum
perineurium
period
period certain
period piece
periodic
periodic acid
periodic function
periodic law
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periodic sentence
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periodical
periodical cicada
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perilous
per·il·ous [ pérrələss ]


adjective 
Definition:
 
very dangerous: involving exposure to very great danger
[13th century. Via Old French perillous< Latin periculosus< periculum (see peril)]

per·il·ous·ly adverb
per·il·ous·ness noun
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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