prob /prob/ (informal)

A problem

• calcium carbides
• calcium carbonate
• calcium carbonates
• calcium chloride
• calcium cyanamide
• calcium hydroxide
• calcium hydroxides
• calcium oxide
• calcium oxides
• calcium phosphate
• calcium phosphates
• calciums
• calcium sulphate
• calcrete
• calcretes
• calc-sinter
• calcspar
• calc-tufa
• calc-tuff
• calculable
• calculably
• calcular
• calculary
• calculate
• calculated