I see a repose that neither earth nor hell can break, and I feel an assurance of the endless and shadowless hereafter — the Eternity they have entered — where life is boundless in its duration, and love in its sympathy, and joy in its fulness.
There are no more uses of "duration" in the book.
Show samples from other sources
I take zinc tablets to help shorten the duration of a cold.
More frequent and longer duration exercise is associated with better health.