littoral /ˈlɪtəɹəl/noun 2adjective 1forms 1 noun2 •A shore, coastline, or coast.[…] these Chams belonged to the Malay-Polynesian group and their distribution along the littoral suggests that they were invaders from the sea […] — 1921 •The zone of a coast between high tide and low tide levels. adjective1 •Of or relating to the shore, especially the seashore. formslittorals