Related Clues:

• Inner (Pref.)
• Within: pref.
• Plasm lead-in
• Morph or scope preceder
• Inner prefix
• Prefix for 'outer'
• Morph or metric preceder
• Ecto's opposite
• Antonym of exo-
• Plasm preceder
• Morph or derm preceder
• Prefix with -scope
• Opening for outside?
• Prefix meaning ''inner''
• __-1: "Ghostbusters" vehicle