calcaria is calcar's Plural Form

calcar

US 
UK ['kɛəɪr]
  • n.【化】(焙化玻璃的)熔炉;煅烧炉;【植】距管;【动】距
Plural Form:calcaria  
n.
1.
【化】(焙化玻璃的)熔炉;煅烧炉
2.
【植】距管
3.
【动】距