1. A transuranic element
   - dubnium, Db, hahnium, element 105

Type of: chemical element, element

• Fast of Av
• Fast of Esther
• Fast of Gedaliah
• Fast of Tammuz
• Fast of Tevet
• Fast of the Firstborn
• fast one
• fast reactor
• fast time scale
• fast track
• fast-breaking
• fast-flying
• fast-footed
• fast-growing
• fast-paced
• fast-talk
• fastback
• fastball
• fasten
• fasten on
• fastened
• fastener
• fastening
• faster
• fastest