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seat +‎ back


seatback (plural seatbacks)

  1. The usually vertical portion of a chair or similar piece of furniture that supports the back.
    • 1968, Popular Mechanics (volume 130, number 6, December 1968, page 20)
      The Institute adds that seatback width can be reduced considerably to improve visibility without sacrificing support strength and antiwhiplash protection.
    • 2009, January 1, “Stephen Milioti”, in The Hand Points the Way:
      The collection, called Kinesis, features a chair with a sensuous seatback and arms; the sleek lines look as if they would be at home in a Porsche.