noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An underwater mountain with a prominence of more than 1,000 meters, which does not breach the surface of the water.
2. 2
   an underwater mountain rising above the ocean floor wordnet

Etymology

From sea + mount.

Related phrases

seamount chain

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