Related Clues:

• Battery contents
• With 44-Across, polluted precipitation
• Word with rock, rain or test
• Zany comedian Philips
• Caustic liquid
• Limelike
• Like volcanic rock
• Ill-natured
• Etching fluid
• Trip agent?
• First name in zany comedy
• One litmus test conclusion
• Punk rock offshoot
• Caustic compound
• Hydrofluoric ___