Lacustral \La*cus"tral\, Lacustrine \La*cus"trine\, a. [L. lacus lake: cf. F. lacustral, lacustre.]

Found in, or pertaining to, lakes or ponds, or growing in them; as, lacustrine flowers.

Lacustrine deposits (Geol.), the deposits which have been accumulated in fresh-water areas.

Lacustrine dwellings. See Lake dwellings, under Lake.

Source: Webster's Revised Unabridged Dictionary (1913)