sub·lit·to·ral | \ ˌsəb-ˈli-tə-rəl 
; ˌsəb-ˌli-tə-ˈral, -ˈräl \
; 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
nounDefinition 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
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Time Traveler for sublittoral
The first known use of sublittoral was in 1839
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