title_body: Does deleting a book from a Kindle account delete it from Kindle devices?
upvoted_answer: By deleting an ebook I assume that it is a matter of a book that you have purchased and finished reading. In this case if you delete your book from the online library all Kindle synced devices that had the book will also delete it.
  
  In case you are talking about a book that you have published, and then unpublished for editing, the previous version of the book that was published and bought by a reader will continue to survive on their Kindle devices. When you finish editing and upload the changes the new version of the book will then be synced to the kindle devices.