lacustrine

 
Pronunciation: /ləˈkʌstrʌɪn, -trɪn/

adjective

technical or literary
  • relating to or associated with lakes: fluvial and lacustrine deposits the boulders were beautiful in their lacustrine tranquillity

Origin:

early 19th century: from Latin lacus 'lake' (the stem lacustr- influenced by Latin palustris 'marshy') + -ine1