of or pertaining to a lake.
living or growing in lakes, as various organisms.
formed at the bottom or along the shore of lakes, as geological strata.

1820–30; < Italian lacustr(e) of lakes + -ine1

interlacustrine, adjective
sublacustrine, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
lacustrine (ləˈkʌstraɪn)
1.  of or relating to lakes
2.  living or growing in or on the shores of a lake
[C19: from Italian lacustre, from Latin lacus lake]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
lacustrine  [%PREMIUM_LINK%]     (lə-kŭs'trĭn)  Pronunciation Key 
  1. Relating to lakes.

  2. Relating to a system of inland wetlands and deep-water habitats associated with freshwater lakes and reservoirs, characterized by the absence of trees, shrubs, or emergent vegetation. Compare marine, palustrine, riverine.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Still today the lacustrine sediments and the shorelines of the lake can be recognized in the field.
Also present in depressions bounded by lacustrine beaches.
These materials consist of semi-liquid seafloor deposits, soft fine-grained lacustrine soils and coarse-grained alluvial soils.
Lacustrine soils are primarily sands, but there are small, local areas of lacustrine clays.
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