1.
weathering; erosion
the natural process by which rocks, soil, or structures are worn down by wind, rain, and other environmental factors
岩が風化する。
The rock weathers.
長年の風化で彫刻が傷んでいる。
The sculpture is damaged from years of weathering.
風化作用で地形が変わる。
The terrain changes due to weathering.
2.
fading from memory; being forgotten
the gradual process of events, memories, or issues losing their significance or being forgotten over time
記憶の風化を防ぐ。
To prevent memories from fading.
事件を風化させてはならない。
We must not let the incident fade from memory.
時間とともに事実が風化していく。
Facts gradually fade from memory over time.
風化 has both a geological and a metaphorical meaning.
KANJI BREAKDOWN:
- 風 (wind)
- 化 (change, transform)
SENSE 1 (Geological weathering):
- 風化作用 (weathering action/process)
- 物理的風化 (physical weathering)
- 化学的風化 (chemical weathering)
SENSE 2 (Fading from memory):
This metaphorical usage is common in discussions about historical events, tragedies, or social issues.
- 記憶の風化 (fading of memory)
- 風化させない (to not let something be forgotten)
- 風化を防ぐ (to prevent fading from memory)
USAGE:
- 風化する (to weather; to fade from memory - suru verb)