1. A radioactive transuranic element; discovered by bombarding curium with alpha particles
   - californium, Cf

Type of: metal, metallic element

• step on it
• step out
• step rocket
• step stool
• step to the fore
• step-down
• step-down transformer
• step-in
• step-up
• step-up transformer
• party spirit
• party to the action
• party to the transaction
• party wall
• party whip
• party-spirited
• partygoer
• Parula
• Parula americana
• parula warbler
• Parulidae
• parure
• Parus
• Parus atricapillus
• Parus bicolor