- that part of the mouth or lower course of a river in which the river's current meets the sea's tide.
- an arm or inlet of the sea at the lower end of a river.
Origin of estuary
Examples from the Web for estuary
Ghost Hawk arose like a mist from the estuary salt-marsh on the South Shore where she built her island home.She Who Came After Tolkien, Before Rowling
August 31, 2013
The estuary where religion and politics intersect is constantly changing.America’s Catholic Moment, and Its New Breed of Catholic Politicians
Michael Sean Winters
March 19, 2013
Joseph paused for a few second, staring out across the estuary.Newt Gingrich: Unscathed by Marianne’s Cheating Charges in South Carolina?
January 20, 2012
At 20 years old, Henry waded into an estuary and nearly drowned in an attempt to swim across.This Week's Hot Reads
The Daily Beast
February 7, 2011
Over the estuary of the Rhine River Stan met his first flak.A Yankee Flier Over Berlin
It was raw and damp as we rowed into the estuary at sunrise in search of the seals.A Labrador Doctor
Wilfred Thomason Grenfell
By three o'clock they had left the estuary of the Seine and entered the Channel.The Blonde Lady
The topsail and jib were spread, and the sloop glided out of the estuary.Cabbages and Kings
It is across this estuary that the lower bridge has been built.Grey Town
- the widening channel of a river where it nears the sea, with a mixing of fresh water and salt (tidal) water
- an inlet of the sea
Word Origin and History for estuary
1530s, from Latin aestuarium "a tidal marsh or opening," from aestus "boiling (of the sea), tide, heat," from PIE *aidh- "to burn" (see edifice). Related: Estuaries; estuarine.
- The wide lower course of a river where it flows into the sea. Estuaries experience tidal flows and their water is a changing mixture of fresh and salt.
- An arm of the sea that extends inland to meet the mouth of a river.
A wide body of water formed where a large river meets the sea. It contains both fresh and salt water.