Origin

The character 礁 combines the radical for stone on the left with a sound component on the right. The stone radical makes sense because reefs and sunken rocks are rocky formations beneath the water's surface. The right component, 焦, is a phonetic hint that tells you roughly how to pronounce the character—it doesn't contribute to the meaning itself. Together, this combination was the natural way to write a word about rocky hazards in the ocean.

AI-generated (claude-haiku-4-5), not yet reviewed. Formation type (automated guess): Phono-semantic (meaning + sound hint).