Past tense of deplane; exited or got off an airplane.
Past tense form of 'deplane' created by adding '-ed'. The word developed from air travel terminology in the early 20th century when aviation industries needed quick, technical vocabulary.
Every time you see 'deplaned' in a news story about an airplane, you're seeing a piece of 20th-century jargon that stuck around—it's the language of the jet age.
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