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seafloor

[see-flawr, -flohr] /ˈsiˌflɔr, -ˌfloʊr/
noun
1.
the solid surface underlying a sea or an ocean.
Also called seabed.
Origin of seafloor
1850-1855
1850-55; sea + floor
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Word Origin and History for sea-floor
n.

1832, from sea + floor (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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3
3
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