magnum opus

It is his magnum opus in literature, and exhibits wide and laborious research.

But you must learn the dictation; the great book, the magnum opus, it is there.

It does not appear that he had any idea of writing his magnum opus in French.

Yet here it is, magnum opus, mocking the naturalist apparently to scorn.

Thence the Cathedral—to be the magnum opus of the good Archbishop.

Magnetised electricity is the first matter of the magnum opus.

Nietzsche wrote his magnum opus in solitude, in the mountains and by the sea.

Yet the professor's magnum opus confers a degree upon us all.

The writing and the printing of this Magnum Opus had been going on as long as she could remember.

His magnum opus is an elementary chemistry in verse for use in schools.