1. the quality or state of being brackish; the condition of containing a mixture of salt and fresh water, or having a slightly salty taste
Usage: uncountable noun; commonly used in environmental and geographical contexts

Examples

• The brackishness of the estuary makes it unsuitable for drinking water.
• Fish in the lagoon have adapted to the brackishness of their environment.
• The river's brackishness increases as it approaches the ocean.
• We tested the water and found a noticeable brackishness due to tidal mixing.
• Mangrove forests thrive in areas of high brackishness.
• The brackishness of the bay supports a unique ecosystem of salt-tolerant plants.