汀てい段だんMeanings1nountidal terrace; bermgeologyGeological term for a flat or gently sloping platform formed by tidal action or wave erosion, often found along rocky coasts.この海かい岸がんには、波なみの浸しん食しょくでできた汀てい段だんが見みられる。On this coast, you can see a tidal terrace formed by wave erosion.