風ふう化か

noun, noun or participle which takes 'suru', intransitive verb

weathering

Geological and physical process of rocks, structures, or materials breaking down due to weather and natural forces.

• この岩いわは長なが年ねんの風ふう化かで丸まるくなった。

  This rock has been rounded by years of weathering.

• 風ふう化かした石いし造づくりの遺い跡せきが残のこっている。

  Weathered stone ruins remain.

noun, noun or participle which takes 'suru', intransitive verb

fading of memories; becoming forgotten

Metaphorical extension: memories, events, or cultural knowledge gradually fading or being forgotten over time.

• 戦せん争そうの記き憶おくが風ふう化かしないように語かたり継つぐ。

  We pass down the stories so that memories of the war do not fade away.

• あの事じ件けんはもう風ふう化かしてしまった。

  That incident has already faded from memory.

noun, noun or participle which takes 'suru', intransitive verb

efflorescence

Chemistry term: the loss of water of crystallization from a hydrated salt, often resulting in a powdery surface. Also cross-referenced with 風解.

See also: 風解

• 硫りゅう酸さんナトリウムは空くう気き中ちゅうで風ふう化かしやすい。

  Sodium sulfate tends to effloresce in air.