Definition of "discernible"

To have demolished and rebuilt the walls, would have been a very costly expedient, and as the least of two evils, the painter's brush was resorted to; here and there however, above some of the windows, the black wreathings of the smoke are still discernible through the white covering.

1821, John Duncan, Duncan's Travels

So this was my future home, I thought! […] Backed by towering hills, the but faintly discernible purple line of the French boundary off to the southwest, a sky of palest Gobelin flecked with fat, fleecy little clouds, it in truth looked a dear little city; the city of one's dreams.

1908, W[illiam] B[lair] M[orton] Ferguson, chapter IV, in Zollenstein, New York, N.Y.: D. Appleton & Company

In 1995, the IPCC declared that the human impact on climate was now “discernible.”

2010, Naomi Oreskes, Erik M. Conway, “Introduction”, in Merchants of Doubt

This magnificent picture really stopped me in my tracks when I stumbled across it. I was drawn inexorably and immediately into the compelling detail discernible on this top-quality image.

2021 December 1, Nigel Harris, “St Pancras and King's Cross: 1947”, in RAIL, number 945, page 36