浸食

• Reading: しんしょく
• Romaji: shinshoku
• Kanji breakdown: 浸 (shin) — soak, permeate | 食 (shoku) — eat, consume
• Pronunciation: /ɕin.ɕo.kɯ/

Meaning

Erosion; the gradual wearing away of rock, soil, or materials by wind, water, or chemical action. Also: corrosion; encroachment.

Used in geology (river erosion, coastal erosion), chemistry (acid corrosion of metals), and metaphorically to describe the gradual undermining of institutions or rights (権利の浸食). Common collocations: 河川による浸食 (river erosion), 浸食作用 (erosional action), 浸食地形 (erosional landform).

Examples

1. 河川による浸食が長い年月をかけて谷を形成し、現在の地形が生まれた。 River erosion formed valleys over long periods of time, giving rise to the present landscape.
2. 酸性雨は建築物の表面を徐々に浸食し、文化財の保存に深刻な影響を与えている。 Acid rain gradually erodes the surfaces of buildings, having a serious impact on the preservation of cultural heritage.
3. 海岸線の浸食を防ぐため、護岸工事や砂浜の養浜事業が実施されている。 To prevent coastal erosion, seawall construction and beach nourishment projects have been implemented.

Usage Guide

Context: geology, chemistry, environmental science, metaphor

Tone: technical

Origin & History

Compound of 浸 (shin) meaning 'soak, permeate' and 食 (shoku) meaning 'eat, consume'. The imagery of water eating into rock captures the process of erosion vividly.

Cultural Context

Era: Modern

Generation: Students and environmental researchers

Social background: Academic