Definition of phreatic
1 : of, relating to, or being groundwater
2 : of, relating to, or being an explosion caused by steam derived from groundwater
Recent Examples of phreatic from the Web
The volcano had experienced a phreatic explosion (water-magma explosions) in early January.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'phreatic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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