luminosity：光明，光辉；发光度；发光体

词根词缀： -lumin-光,照 + -osity名词词尾

• overdue
• over-egg the pudding
• overemphasis
• overestimate
• overexpose
• overfeed
• overfishing
• overflow
• overgeneralize
• overgenerous
• overgraze
• overgrown
• overgrowth
• overhang
• overhasty
• overhaul
• overhead
• overheads
• overhear
• overindulge
• overinflated
• overjoyed
• overkill
• overlap
• overlay