Megatsunami

//ˌmɛɡətsuːˈnɑːmi// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    An extremely large tsunami-like wave caused by an avalanche or landslide displacing large amounts of water very quickly.
  2. 2
    A very large tsunami. broadly

Etymology

From mega- + tsunami.

Related phrases

natural disastertidal wave

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.