What is the meaning of next?

adjective

• Immediately following in time or order.
  • usage: "the following day"; "next in line"; "the next president"; "the next item on the list"
  • synonyms: following
• Nearest in space or position; immediately adjoining without intervening space.
  • usage: "had adjacent rooms"; "in the next room"; "the person sitting next to me"; "our rooms were side by side"
  • synonyms: adjacent, side by side
• Of elected officers. ( elected but not yet serving)
  • usage: "our next president"
  • synonyms: future, succeeding

adverb

• At the time or occasion immediately following.
  • usage: "next the doctor examined his back"