Its steeples and towers and its one great dome grow more ethereal; its smoky house-tops lose their grossness in the pale effulgence; the noises that arise from the streets are fewer and are softened, and the footsteps on the pavements pass more tranquilly away.
There are no more uses of "effulgent" in the book.
Show samples from other sources
With that word the heat seemed to increase till it became a threatening weight and the lagoon attacked them with a blinding effulgence.
William Golding -- Lord of the Flies
A glowing effulgence seemed to swell out of nothing behind him …. like an incoming fireball.