caldera

IPA/kælˈdeərə/
KK[kˌældˈɛrə]IPA/kælˈderə/

caldera — noun

  • calderasingular
  • calderasplural

1. a vast round basin that appears when a mountain peak caves in after a major volc

1.名詞C2
釋義

a vast round basin that appears when a mountain peak caves in after a major volcanic explosion, sometimes later filling with rainwater to create a lake

例句

The tour guide pointed at the ancient caldera on the island of Santorini.

Mizuki drew a diagram of the volcano's caldera for her science project.

caldera + for + [project]

同義詞
  • crater

    crater is a general term for any bowl-shaped opening at a volcano's vent; a caldera is a much larger, collapsed version

  • volcanic basin

    more descriptive term that emphasizes the large, bowl-like shape, but less commonly used in everyday English

用法筆記

Caldera differs from the more general term crater — a caldera is much larger (often many kilometers across) and forms when the volcano's summit collapses, rather than being dug out by explosive blasts.

常見錯誤

❌The volcano's caldera was only thirty meters wide.
✅The volcano's caldera stretched several kilometers across.
💡A caldera is a vast basin, not a small opening; a thirty-meter depression would be called a crater, not a caldera.