1. Volcanic rocks (often shortened to volcanics in scientific contexts) are rocks formed from lava erupted from a volcano. Like all rock types, the concept of volcanic rock is artificial, and in nature volcanic... from wikipedia.org

English: volcanic rock,
Assamese: উদ্‌গীৰ্ণ শিল

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a. Material Noun-Neuter: igneous rock, আগ্নেয় শিল...