Related Clues:

• What a plus sign may indicate
• Molecule in some ostensibly healthier water
• Na+, e.g.
• Atom with extra electrons, perhaps
• ___ drive (engine in 'Star Wars')
• One created by hydrolysis
• Na+, for one
• Tiny charged thing
• It may be positively charged
• Old Saturn compact
• "Am ___ the list?"
• Atomic alternative
• Exempt attachment?
• Charged particle.
• Electrically-charged particle