1. A radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium
   - neptunium, Np

Type of: metal, metallic element

• cloud-covered
• cloud-cuckoo-land
• cloudberry
• cloudburst
• clouded
• cloudiness
• clouding
• clouding up
• cloudless
• cloudlessness
• cloudlike
• cloudy
• clough
• clout
• clout nail
• clove
• clove hitch
• clove oil
• clove pink
• clove tree
• clove-scented
• cloven
• cloven foot
• cloven hoof
• cloven-footed