saltwater

1 of 2

adjective

salt·​wa·​ter ˈsȯlt-ˌwȯ-tər 

-ˌwä-

1

: consisting of or containing salt water

saltwater lagoons

a saltwater solution

compare freshwater

2

: living in or taken from salt water

saltwater fish

saltwater pearls

3

: relating to, associated with, or suitable for salt water

a saltwater rod

saltwater tales

salt water

2 of 2

noun

variants or less commonly saltwater

1

: water to which salt (as sodium chloride) has been added

flush the wound with salt water

We think all turkeys are improved by brining (soaking in salt water), but it's a cumbersome task that few holiday schedules can accommodate.

—Gourmet

2

: water (as of the ocean) that naturally contains a significant amount of salt : seawater

This deck shoe uses a patented leather that's virtually immune to salt water.

—Michael Verdon

also : a body of salt water

We hiked on, finally reaching the island's highest point, a lookout with sweeping views far out across the salt water.

—Wendy Williams

compare fresh water

Examples of saltwater in a Sentence

Recent Examples on the Web

Adjective

Up to one half foot of saltwater inundation above ground level is possible near shorelines and tidal waterways. — Ca Weather Bot, Sacbee.com, 12 June 2026

Falke will study mechanical engineering at Boston University and hopes to work in an area like protecting saltwater marshes. — Grace Zokovitch, Boston Herald, 27 May 2026

Noun

Brain-eating amoebas are more commonly found in warm freshwater lakes and rivers, while flesh-eating bacteria are primarily found in warm brackish water, which is a mix of fresh and salt water. — Janet Loehrke, USA Today, 17 July 2026

The researchers say the next priorities are autonomous navigation, better performance in salt water, and longer range and endurance. — New Atlas, 13 July 2026

Word History

First Known Use

Adjective

1528, in the meaning defined at sense 1

Noun

before the 12th century, in the meaning defined at sense 2

Phrases Containing saltwater

• saltwater taffy

Rhymes for saltwater

• backwater
• bathwater
• blackwater
• breakwater
• deepwater
• edgewater
• feedwater
• floodwater
• freshwater
• granddaughter
• groundwater
• headwater

Kids Definition

saltwater

adjective

salt·​wa·​ter ˈsȯlt-ˌwȯt-ər 

-ˌwät-

: relating to, living in, or consisting of salt water