carapace /karˈə-pās/

1. The thick hard shell, made of bone or chitin, of the crab, tortoise, turtle, etc
2. A layer of heat-resistant tiles on a spacecraft
3. An inpenetrable outer shell, eg a reserved manner used as a protection against outside influences

• action groups
• actioning
• actionist
• actionists
• action-packed
• action painting
• action paintings
• action plan
• action plans
• action point
• action points
• action potential
• action potentials
• action radius
• action replay
• action replays
• actions
• action sheet
• action spectra
• action spectrum
• action stations
• action-taking
• activate
• activated
• activated charcoal