Definition of supralittoral in English:

supralittoral

adjective

Ecology
  • Situated immediately above the limit of high tides; specifically designating an ecological zone extending from mean high tide to the limit of the influence of sea spray; also as noun, such a zone.

Origin

Mid 19th century; earliest use found in Charles Darwin (1809–1882), naturalist, geologist, and originator of the theory of natural selection.