also: みぎわせん
shoreline; beach line
Technical or formal term for the line where land meets water, often used in geography, coastal engineering, or legal contexts.
The shoreline is accurately drawn on this map.
海岸侵食によって汀線が後退している。
The shoreline is retreating due to coastal erosion.
Standard kanji spelling; the reading ていせん is the most common.
Alternate reading みぎわせん, less common; may be encountered in older or specialized texts.
Compound of 汀 (shore, water's edge) and 線 (line). The reading みぎわせん uses the kun'yomi of 汀 (みぎわ) combined with 線 (せん).