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pyramidal tract
Pyramus and Thisbe
pyran
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pyrargyrite
pyrazine
pyrazole
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pyorrhea

py·or·rhe·a [ p ə r ə ]


noun 
Definition:
 
gum inflammation with discharge of pus: inflammation of the gums with a loosening of the teeth and a discharge of pus from the tooth sockets

[Early 19th century. < modern Latin, "flowing of pus" < Greek puon "pus"]

py·or·rhe·al adjective
py·or·rhe·ic adjective
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