eruption
n.-
1 volcanic activity (n.) B2 Upper Intermediate Sciencethe moment when a volcano throws out hot lava, ash, and gas.
the sudden and violent ejection of volcanic material, such as lava, tephra, and gases, from a vent in the Earth's crust.
ExampleThe massive eruption of the volcano forced thousands of people to leave their homes.
ExampleGeologists monitored the seismic activity for weeks, yet the eventual eruption was more powerful than any of their models had predicted.
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2 sudden noise or emotion (n.) B2 Upper Intermediatea sudden, loud burst of noise or a strong showing of feeling.
a sudden and violent outbreak of noise, activity, or emotion from a person or group.
ExampleAn eruption of laughter filled the room after he told the joke.
ExampleThe referee's controversial decision triggered an immediate eruption of anger from the home crowd, leading to a brief delay in the match.
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3 skin rash (n.) C1 Advanced Technical Medicinea sudden appearance of spots or a rash on your skin.
the sudden appearance of a rash, spots, or other lesions on the skin, often as a symptom of an underlying infection.
ExampleThe doctor examined the red eruption on the child's arm to see if it was an allergy.
ExampleThe patient presented with a painful eruption of small blisters across the torso, characteristic of a viral infection.
From Middle French éruption, from Latin eruptio.