To provide (e.g. a room) with more, or new, seats.
“We should reseat this cinema – the old seats are worn.”
To seat (someone) again, to give somebody a different seat.
“We have to reseat you, sir: this seat is reserved for the guest speaker.”
To sit down again.
“I reseated after standing up to applaud the prizewinner.”
To plug (something) back into its socket.
“Try reseating your video adapter, and see if that fixes your computer’s problems.”
To fit (something, especially a valve) back into its place.
“To ensure that there are no leaks, clean the surfaces before you reseat the valve.”
To take an examination a second time.
An examination taken a second time.