parathesis /pə-rathˈi-sis/

1. Apposition (grammar)
2. The compounding of words without change, as (Latin) rēspūblica from rēs and pūblica (philology)

• piano-player
• piano-players
• piano roll
• piano rolls
• pianos
• piano-school
• piano-schools
• piano stool
• piano stools
• piano wire
• piano wires
• piarist
• piarists
• pias
• piassaba
• piassabas
• piassava
• piassavas
• piastre
• piastres
• piazza
• piazzas
• piazzian
• pibroch
• pibrochs