續一切經音義 2.17

2.17

氤氳（上於真反下音於云反切韻云二字元氣盛也又香氣分布皃說文云從氣因昷形聲字也气音氣昷音溫也）。

Vapour / fragrant mist (氤氳) (The first [character] has the fanqie yú + zhēn [yīn]. The second has the sound of the fanqie yú + yún [yūn]. The Qieyun states: 'These two characters mean the primordial pneuma is flourishing; also the appearance of fragrance spreading.' The Shuowen states: 'They derive from pneuma (气) with yīn (因) and wēn (昷) as phonetics; they are phono-semantic characters.' 气 has the sound qì, and 昷 has the sound wēn).