ria

noun

1. a long, narrow inlet of a river that gradually decreases in depth from mouth to head.

noun

1. a long narrow inlet of the seacoast, being a former valley that was submerged by a rise in the level of the sea. Rias are found esp on the coasts of SW Ireland and NW Spain

abbreviation for

1. Royal Irish Academy

n.

from Spanish ria “estuary, river mouth” (adopted as a geological term first in German, 1886), from Latin ripa “stream bank” (see riparian).

abbr.

1. radioimmunoassay