existing or done between seacoasts; involving two or more seacoasts.

Origin of intercoastal

First recorded in 1925–30; inter- + coastal Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for intercoastal

Historical Examples of intercoastal

Word Origin and History for intercoastal

"within the coasts," 1927, from inter- + coastal.

Online Etymology Dictionary, © 2010 Douglas Harper