一切經音義 6.106

6.106

Pervasive mist (氤氳: the first is pronounced as yīn; the second with the fanqie 威雲 [yūn]. The Classic of Changes says: "Heaven and Earth mingle their vapor, and all things transform and flourish." The Guangya says: "Yinyun means primordial vapor." I observe that yinyun is an auspicious, propitious vapor, resembling clouds yet not clouds, light and ethereal like azure smoke. It derives from vapor [气, pronounced qì], with 因 and 昷 both serving as phonetics. It is also written with silk [糸] as 絪縕. 昷 is pronounced wēn; it derives from 曰 and 皿, an associative compound).