diatomite
noun Date: 1887 diatomaceous earth

New Collegiate Dictionary. 2001.

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  • Diatomite — La diatomite est une roche de couleur claire formée entièrement ou presque de squelettes de diatomées. Ces algues unicellulaires sont entourées d une « carapace » en silice, le frustule, dont l accumulation sur le fond peut conduire à… …   Wikipédia en Français

  • diatomite — [ djatɔmit ] n. f. • 1948; de diatomée ♦ Minér. Roche constituée par des débris de diatomées, employée industriellement pour ses propriétés absorbantes et abrasives. ⇒ tripoli. ● diatomite nom féminin (de diatomée) Roche sédimentaire siliceuse,… …   Encyclopédie Universelle

  • diatomite — [dī at′ə mīt΄] n. a light colored, soft sedimentary rock formed mainly of the siliceous shells of diatoms and used in a finely pulverized state as an abrasive, absorbent, filter, etc.: also called diatomaceous earth * * * di·at·o·mite (dī ătʹə… …   Universalium

  • diatomite — [dī at′ə mīt΄] n. a light colored, soft sedimentary rock formed mainly of the siliceous shells of diatoms and used in a finely pulverized state as an abrasive, absorbent, filter, etc.: also called diatomaceous earth …   English World dictionary

  • diatomite — Infusorial In fu*so ri*al, a. (Zo[ o]l.) Belonging to the Infusoria; composed of, or containing, Infusoria; as, infusorial earth. [1913 Webster] {Infusorial earth} (Geol.), a deposit of fine, usually white, siliceous material, composed mainly of… …   The Collaborative International Dictionary of English

  • diatomite — diatomaceous earth di a*to*ma ceous earth (Geol.), a deposit of fine, usually white, siliceous material, composed mainly of the shells of the microscopic plants called diatoms; also called {infusorial earth}, {kieselguhr}, and {diatomite}. It is… …   The Collaborative International Dictionary of English

  • diatomite — di·at·o·mite dī at ə .mīt n a light friable siliceous material derived chiefly from diatom remains and used esp. as a filter called also diatomaceous earth * * * di·at·o·mite (di atґə mīt) infusorial earth (diatomaceous earth) in a dry …   Medical dictionary

  • diatomite —    A light colored, soft, siliceous sedimentary rock consisting chiefly of opaline diatom frustules deposited in a lacustrine or marine environment. Diatomite has a number of uses owing to its high surface area, absorptive capacity, and relative… …   Glossary of landform and geologic terms

  • diatomite — diatomitas statusas T sritis chemija apibrėžtis Nuosėdinė uoliena iš titnagdumblių opalinių (SiO₂·nH₂O) kiautelių. atitikmenys: angl. diatomite rus. диатомит …   Chemijos terminų aiškinamasis žodynas

  • diatomite — diatomitas statusas T sritis ekologija ir aplinkotyra apibrėžtis Silicitų grupės silpnai cementuota, labai poringa, lengva nuosėdinė uoliena. Susidariusi iš sucementuotų titnagdumblių dvinarių opalinių kiautelių (60–95 % masės sudaro opalas).… …   Ekologijos terminų aiškinamasis žodynas

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