লক্ষ্য করুন: এই এন্ট্রির অনুবাদ বর্তমানে মান পর্যালোচনার অধীনে রয়েছে, তাই কিছু বিষয়বস্তু সাময়িকভাবে শুধুমাত্র ইংরেজিতে প্রদর্শিত হচ্ছে।
এই এন্ট্রিটি এখনও আপনার ভাষায় অনুবাদ করা হয়নি, তাই নিচে মূল লেখাটি দেখানো হচ্ছে।
tephra
This term serves as a broad umbrella category in volcanology, encompassing everything from fine ash to massive volcanic bombs. It is used primarily in scientific and academic contexts to describe the physical debris of an eruption without specifying the chemical makeup or the exact grain size of the particles.
Grammatically, tephra is treated as an uncountable mass noun. Because it refers to a collective volume of fragmented material, it does not have a plural form in standard usage. To refer to specific quantities or types, researchers use partitive constructions such as a layer of tephra or a sample of tephra.
Meanings
Examples
The ground was completely covered in a thick layer of grey tephra.
Look at these tephra deposits in the cliff side.
The researchers are sampling the tephra to determine the volcano's chemical composition.
Ancient civilizations often struggled to farm land buried under volcanic tephra.
I wonder if this tephra layer dates back to the Pleistocene epoch.
The wind carried the fine tephra miles away from the crater.
We need to distinguish between the ash and the larger tephra fragments.
The tephra fall was so intense that it blocked out the sun for hours.