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peripatus
peripheral
peripheral nerve entrapment syndrome
peripheral nervous system
periphery
periphery region
periphrasis
periphrastic
periphyton
periplasm
periplast
periproct
peripteral
perique
periscope
periscopic
perish
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periphyton
pe·riph·y·ton [ pə ríffə tòn ]


noun 
Definition:
 
water organisms: plants and animals that live in water attached to rocks and other submerged objects
[Mid-20th century. Probably <peri- + Greek phuton "plant," after plankton]
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