Definition of volcanic in English:



  • 1Relating to or produced by a volcano or volcanoes.

    ‘types of volcanic activity’
    ‘thick deposits of black volcanic ash’
    • ‘At the base of the food chain are bacteria that dwell in the searing fluids belching from the volcanic vents.’
    • ‘However, this folding mechanism is thought to be related to the nearest volcanic activity.’
    • ‘Even scarier and more destructive than volcanic mudflows are pyroclastic flows or glowing avalanches.’
    • ‘According to geologists, mountains are formed because of volcanic activity or the movement of the plates of the earth.’
    • ‘The seabed is a combination of volcanic ash, black sand and mud, strewn with the detritus of a million passing boats.’
    • ‘Such communities use the volcanic emissions as their sole source of energy.’
    • ‘At least three phases of volcanic activity are present within the Erenlerdag Volcanic Complex.’
    • ‘In addition to scoria and ash, other volcanic ejecta include blocks, bombs, and xenoliths.’
    • ‘Old lava flows and beds of volcanic ash underlie the surface of much of this part of Colorado.’
    • ‘Timau was an obvious choice in that the area has a temperate climate and fertile volcanic soils.’
    • ‘A volcanic cone is composed of material ejected from the volcano.’
    • ‘This caused thermal uplift of Scotland and the East Shetland platform and volcanic activity.’
    • ‘However, many of these basins experienced intense volcanic activity which may have caused local folding.’
    • ‘We estimate the magma production, erosion and marine depositional rates of volcanic products.’
    • ‘These became later covered in ash and dust from volcanic eruptions in the region.’
    • ‘More than 80 Vesuvius eruptions were listed in a recent worldwide directory of volcanic activity.’
    • ‘They suggest that the volcanic constructions on rifted margin segments develop through five main phases.’
    • ‘Volcanologists now monitor the frequency of volcanic activity in an effort to predict eruptions.’
    • ‘This confirms that the tension fractures were formed during the volcanic activity.’
    • ‘The trees thrive in tropical conditions near the sea, and seem to prefer volcanic soils, as in the Moluccas and Grenada.’
    tense, charged, highly charged, overwrought
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    1. 1.1 (of a feeling or emotion) bursting out or liable to burst out violently.
      ‘the kind of volcanic passion she'd felt last night’
      • ‘Football's corporate wing is doing its best to raise the level of excitement about the competition to volcanic levels.’
      • ‘As he gazes past you into the middle-distance, you sense that he could erupt in a volcanic temper.’
      unpredictable, changeable, variable, inconstant, inconsistent, uncertain, erratic, irregular, unstable, turbulent, unsteady, unsettled, unreliable, undependable, changing, ever-changing, varying, shifting, fluctuating, fluid, mutable, protean, fitful, wavering, full of ups and downs
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Late 18th century: from French volcanique, from volcan (see volcano).