10 letters · 11 points in Scrabble
adjective of or relating to the littoral area above the low-tide mark
originEtymology tree Proto-Indo-European *h₁én Proto-Indo-European *h₁entér Proto-Italic *n̥ter Latin inter Latin inter-bor. English inter- English tidal English intertidal From inter- + tidal.
Etymology from Wiktionary, CC BY-SA 3.0