seafloor

or sea floor

[ see-flawr ]

noun
  1. the solid surface underlying a sea or an ocean.

Origin of seafloor

1
First recorded in 1850–55; sea + floor

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use seafloor in a sentence

  • Considerably more than half of the sea floor lies at a depth exceeding two thousand fathoms, or more than two geographical miles.

  • Far off, mournfully the bell-buoy sent in its blur of musical tolling across the moving sea-floor.

    Cursed | George Allan England