[ suhb-lit-er-uh l ]
/ sʌbˈlɪt ər əl /


of or relating to the biogeographic region of the ocean bottom between the littoral and bathyal zones, from the low water line to the edge of the continental shelf, or to a depth of approximately 660 feet (200 meters).
being or situated in the zone of a lake extending from the lowest depth of rooted photosynthetic plants to the level at which the photosynthetic rate of flora equals the respiration rate.


a sublittoral zone or region.

Origin of sublittoral

First recorded in 1840–50; sub- + littoral Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for sublittoral

British Dictionary definitions for sublittoral

/ (sʌbˈlɪtərəl) /


(of marine organisms) growing, living, or situated close to the seashorea sublittoral plant
of or relating to the zone between the low tide mark and 100 m depth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for sublittoral

[ sŭb-lĭtər-əl ]

Relating to the region of the ocean bottom between the low tide line and the edge of the continental shelf, ranging in depth to about 200 m (656 ft). Unlike areas of the littoral zone, the sublittoral zone is always submerged. Compare littoral.
Relating to the deeper part of a lake below the area in which rooted plants grow.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.