Dictionary > English Dictionary > Definition, synonym and antonym of obsidian
Meaning of obsidian by Wiktionary Dictionary

obsidian


    ObsidianOregon.jpg

    Pronunciation

    • ( UK ) IPA: /ˌɒbˈsɪd.i.ən/
    • ( US ) IPA: /ˌɑbˈsɪdiən/

    Noun

    obsidian ( usually uncountable; plural: obsidians )

    1. ( 鉱物学 ) a type of black glass produced by volcanos

    Adjective

    obsidian ( comparative more obsidian, superlative most obsidian )

    1. ( poetic ) black


Explanation of obsidian by Wordnet Dictionary

obsidian


    Noun
    1. acid or granitic glass formed by the rapid cooling of lava without crystallization



    Definition of obsidian by GCIDE Dictionary

    obsidian


    1. obsidian n. [L. Obsidianus lapis, so named, according to Pliny, after one Obsidius, who discovered it in Ethiopia: cf. F. obsidiane, obsidienne. The later editions of Pliny read Obsianus lapis, and Obsius, instead of Obsidianus lapis, and Obsidius.] ( Min. ) A kind of glass produced by volcanoes. It is usually of a black color, and opaque, except in thin splinters.

      ☞ In a thin section it often exhibits a fluidal structure, marked by the arrangement of microlites in the lines of the flow of the molten mass.