Last seen in:
Related Clues:
- Element next to iodine on the periodic table
- Stroboscope gas
- Propellant in ion thrusters
- Lighthouse emission
- Ray makes you smile
- Gymnast's balancing equipment
- ''___ me up, Scotty!''
- Word with ''sun'' or ''moon''
- Balancing equipment
- Element in some auto headlights
- Laser pointer's output
- Periodic table's 54
- Smile (and a word that can follow the first parts of 21- and 49-Across and 3- and 29-Down)
- Gymnast's balancer?
- Flash live in the morning