OBSIDIAN - Định nghĩa trong Từ điển tiếng Anh
obsidian (noun)
/əbˈsɪdiən/
Giải nghĩa:
A dark, shiny volcanic glass rock.
Ví dụ:
The arrowhead was made of obsidian.
obsidian (noun)
/əbˈsɪdiən/
Giải nghĩa:
A type of dark glass, made when lava cools quickly.
Ví dụ:
She picked up a piece of obsidian from the ground.
Cách sử dụng
Obsidian is a type of dark black or brown rock that is formed from cooled lava. It is very smooth and shiny, almost like glass. Obsidian is often used to make sharp cutting tools like knives and arrowheads because it is so hard and strong. People who study geology or archaeology often use the word obsidian to describe different types of rocks or artifacts made from obsidian. It is a word that is mostly used in scientific or technical contexts, rather than in everyday conversation.
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