Related Clues:

• Corrosive stuff
• One of the senses
• Etcher's fluid
• Hosp. picture
• Aesthetic sense
• CAT scan relative
• It was dropped in the '60s
• Vitriolic
• Crime solver's aid
• Test material?
• Alpha's follow-up
• Former VHS rival
• With 61-Down, Pollux, e.g.
• Sometimes it's not taken
• 3-D exam