lagoon

[ luh-goon ]
/ ləˈgun /

noun

an area of shallow water separated from the sea by low sandy dunes.Compare laguna.
Also lagune. any small, pondlike body of water, especially one connected with a larger body of water.
an artificial pool for storage and treatment of polluted or excessively hot sewage, industrial waste, etc.

Origin of lagoon

1605–15; earlier laguna (singular), lagune (plural) < Italian < Latin lacūna (singular), lacūnae (plural) ditch, pool, akin to lacus basin, lake1; see lacuna

Related forms

la·goon·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for lagoon

British Dictionary definitions for lagoon

lagoon

/ (ləˈɡuːn) /

noun

a body of water cut off from the open sea by coral reefs or sand bars
any small body of water, esp one adjoining a larger one
Also (rare): lagune

Word Origin for lagoon

C17: from Italian laguna, from Latin lacūna pool; see lacuna
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for lagoon

lagoon

[ lə-gōōn ]

A shallow body of salt water close to the sea but separated from it by a narrow strip of land, such as a barrier island, or by a coral reef.
A shallow pond or lake close to a larger lake or river but separated from it by a barrier such as a levee.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.