What is "unfractionated"

Usage examples of "unfractionated".

Did she embody gradations of innocence and sinfulness, or was she a contaminated essence, an unfractionated evil?

The rays of lantern light had grown sharply defined, blades of radiance that spread to touch the ranks of books and folios on the opposite wall, and as they brightened further Kostolec himself began to darken, his flesh and his clothing losing detail and color as if he had fallen under a deep shadow, until at last the light dimmed to its normal brilliance, and what stood by the railing beneath it had itself become no more than a shadow, a figure of absolute, unfractionated black.