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perilla
perilous
perilune
perilymph
perimeter
perimorph
perimysium
perinatal
perinatology
perinephrium
perineum
perineurium
period
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periodical cicada
pe·ri·od·i·cal ci·ca·da


noun 
Definition:
 
insects 
Same as  seventeen-year locust
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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