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perisher
perishing
perisperm
perissodactyl
peristalsis
peristome
peristyle
perithecium
peritoneum
peritonitis
peritrack
peritrich
periwig
periwinkle (1)
periwinkle (2)
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periproct
per·i·proct [ pérrə pròkt ] (plural per·i·procts)


noun 
Definition:
 
area near anus of invertebrate: the area surrounding the anus of some invertebrate animals such as sea urchins
[Late 19th century. <peri- + Greek prōktos "anus"]
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