Simple past tense and past participle of expose.(verb)
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Use "exposed" in a sentence
"A friend of mine who is a life-insurance professional concluded, for health insurance, that it made more sense for his family to purchase an umbrella policy for catastrophic problems and remain 'exposed' for the everyday stuff."
"Beck stands as though naked, his sin exposed for the entire world to see."
"Synopsis: When a mental patient is discovered with his brain exposed, the Fringe team — Olivia Dunham (Anna Torv), Peter Bishop (Joshua Jackson) and Walter Bishop (John Noble) — are shocked to learn that the patient has become more sane."