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saltwater

[sawlt-waw-ter, -wot-er]
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adjective
  1. of or relating to salt water.
  2. inhabiting salt water: a saltwater fish.
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Origin of saltwater

First recorded in 1520–30; salt1 + water
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for saltwater

saltwater

adjective
  1. of, relating to, or inhabiting salt water, esp the seasaltwater fishes
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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
saltwater in Science

saltwater

[sôlt′wô′tər]
  1. Consisting of or living in salty water, especially seawater.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.