a. Of or situated near the seashore.
b. Of or relating to an organism living near or just below the low tide level of a shore.
2. Lying between the low tide line and the edge of the continental shelf or ranging in depth to about 100 fathoms or 200 meters (660 feet).
3. Of or relating to the deeper part of a lake below the area in which rooted plants grow.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.