[soo-pruh-lit-er-uh l]
  1. of or relating to the biogeographic region of a shore of a lake, sea, or ocean permanently above water but made damp by spray from waves or by capillarity of the substrate.
  1. a supralittoral zone or region.

Origin of supralittoral

First recorded in 1905–10; supra- + littoral Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018