sublittoral

adjective
sub·​lit·​to·​ral | \ˌsəb-ˈli-tə-rəl; ˌsəb-ˌli-tə-ˈral, -ˈräl\

Definition of sublittoral 

(Entry 1 of 2)

1 : situated, occurring, or formed on the aquatic side of a shoreline or littoral zone

2 : constituting the sublittoral

sublittoral

noun

Definition of sublittoral (Entry 2 of 2)

: the deeper part of the littoral portion of a body of water especially : the region in an ocean between the lowest point exposed by a low tide and the margin of the continental shelf

First Known Use of sublittoral

Adjective

1839, in the meaning defined at sense 1

Noun

1886, in the meaning defined above

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The first known use of sublittoral was in 1839

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