Related Clues:

• A small thing, but half the dictionary is missing?
• Shred some audio tape
• I return to a trivial item
• It's a very little matter, like half of our letters
• Scrap a section of the Riot Act
• Key test about to reveal smallest particle
• It's been split, the first half of dictionary?
• Very tiny amount
• Greek letter I
• A little bit
• Small unit of matter
• Very small amount - Greek letter
• Greek letter - small quantity
• Nucleus surrounded
• Greek letter - minimal amount