Pyroclastic material that is more than 75% glass.

Glossary of landform and geologic terms. 2013.

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  • Vitric — Vit ric, a. [L. vitrum glass.] Having the nature and qualities of glass; glasslike; distinguished from {ceramic}. [1913 Webster] …   The Collaborative International Dictionary of English

  • vitric — [vi′trik] adj. [< L vitrum, glass + IC] of, having the nature of, or like glass …   English World dictionary

  • vitric — /vi trik/, adj. 1. of or pertaining to glass. 2. of the nature of or resembling glass. [ < L vitr(um) glass + IC] * * * …   Universalium

  • vítric — ví|tric Mot Pla Adjectiu variable …   Diccionari Català-Català

  • VITRIC — vitricus …   Abbreviations in Latin Inscriptions

  • vitric — vit·ric …   English syllables

  • vitric — /ˈvɪtrɪk/ (say vitrik) adjective 1. of or relating to glass. 2. of the nature of glass; glass like. {Latin vitrum glass + ic} …   Australian English dictionary

  • vitric — ˈvi.trik adjective Etymology: Latin vitrum glass + English ic more at woad : having the nature or quality of glass : resembling glass distinguished from ceramic …   Useful english dictionary

  • Andosol — (von jap. an do, ‚schwarzer Boden‘ und lat. sol, ‚Boden‘) ist eine der 32 Referenz Bodengruppen der World Reference Base for Soil Ressources (WRB). Die Gruppe umfasst vor allem Böden, die aus der Asche von Vulkanen entstanden sind. Unter sauren… …   Deutsch Wikipedia

  • tuff — tuff1 /tuf/, adj. Slang. tough (def. 13). tuff2 tuffaceous /tu fay sheuhs/, adj. /tuf/, n. Geol. a fragmental rock consisting of the smaller kinds of volcanic detritus, as ash or cinder, usually more or less stratified. Also called volcanic tuff …   Universalium