1. (medicine) poorly understood debilitating medical condition causing exhaustion, muscle and joint pain, and other symptoms
   - chronic fatigue syndrome, ME

Encyclopedia: Myalgic encephalomyelitis

• performance capability
• performant
• performer
• performing
• performing artist
• performing arts
• perfume
• perfumed
• perfumer
• perfumery
• perfunctorily
• perfunctory
• perfuse
• perfusion
• Pergamum
• pergola
• perhaps
• peri
• Periactin
• perianal
• perianth
• periapsis
• periapt
• periarterial plexus
• periarteritis