relating to or situated on the shore of the sea or a lake:the littoral states of the Indian Ocean
Ecology relating to or denoting the zone of the seashore between high- and low-water marks, or the zone near a lake shore with rooted vegetation:limpets and other littoral molluscs
noun
a region lying along a shore:irrigated regions of the Mediterranean littoral
Ecology the littoral zone.
Origin:
mid 17th century: from Latin littoralis, from litus, litor- 'shore'
littoral in other Oxford dictionaries
Definition of littoral in the US English dictionary