WordReference Random House Unabridged Dictionary of American English © 2025
in•ter•tid•al
(in′tər tīd′l),USA pronunciation adj.
- Ecology, Oceanographyof or pertaining to the littoral region that is above the low-water mark and below the high-water mark.
- inter- + tidal 1880–85
'intertidal' also found in these entries (note: many are not synonyms or translations):