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pertain
Perth
Perth and Kinross
pertinacious
pertinent
perturb
perturbation
perturbation theory
pertussis
Peru
Peru Current
Perugia
peruke
peruse
Peruvian
Peruvian balsam
Peruvian bark
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pertussis
per·tus·sis [ pər tússiss ]


noun 
Definition:
 
medicine  ( technical )
Same as  whooping cough
[Late 18th century. < modern Latin< Latin per- "extreme" + tussis "cough"]

per·tus·sal adjective
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