diabase
noun Etymology: French, probably from Greek diabasis act of crossing over, from diabainein to cross over, from dia- + bainein to go — more at come Date: circa 1816 1. archaic diorite 2. chiefly British an altered basalt 3. a fine-grained rock of the composition of gabbro but with an ophitic texturediabasic adjective

New Collegiate Dictionary. 2001.

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  • Diabase — /ˈd …   Wikipedia

  • diabase — ● diabase nom féminin (grec diabasis, traversée) Roche magmatique filonienne de composition basique très altérée. ⇒DIABASE, subst. fém. GÉOL. Roche éruptive de couleur souvent verte, à l aspect grenu ou uniforme. Il y a des roches granitoïdes… …   Encyclopédie Universelle

  • Diabase — Di a*base, n. [F. diabase, fr. Gr. ? a crossing or passing over, fr. ?; ? + ? to go; so called by Brongniart, because it passes over to diorite.] (Min.) A basic, dark colored, holocrystalline, igneous rock, consisting essentially of a triclinic… …   The Collaborative International Dictionary of English

  • diábase — s. f. [Geologia] Rocha magmática maciça, granulosa, de cor escura, constituída essencialmente por plagioclásio, hornblenda, olivina e piroxênio. = DIABÁSIO, DOLERITE, DOLERITO   ‣ Etimologia: grego diábasis, eos, passagem …   Dicionário da Língua Portuguesa

  • diabase — [dī′əbās΄] n. [Fr < Gr diabasis, a crossing over < dia (see DIA ) + bainein, to go, COME] 1. former term for DIORITE 2. a finely crystalline, intrusive basaltic rock made up mainly of labradorite and pyroxene 3. Brit. altered dolerite… …   English World dictionary

  • diabase — diabasic, adj. /duy euh bays /, n. Petrol. 1. a fine grained gabbro occurring as minor intrusions. 2. Brit. a dark igneous rock consisting essentially of augite and feldspar; an altered dolerite. [1810 20; < F, equiv. to dia (error for di two) +… …   Universalium

  • Diabase — Pour les articles homonymes, voir Diabase (homonymie). Diabase La diabase est une roche ignée mafique, holocristalline, analogue au basalte volca …   Wikipédia en Français

  • diabase — (di a ba z ) 1°   S. m. Terme de zoologie. Genre de diptères, de conformation intermédiaire entre les taons et les chrysops. 2°   S. f. Terme de minéralogie. Synonyme de diorite. ÉTYMOLOGIE    En grec, passage et action d aller, base (voy. base)… …   Dictionnaire de la Langue Française d'Émile Littré

  • diabase — di·a·bà·se s.m. TS petr. roccia effusiva vulcanica, di composizione simile ai basalti, costituita prevalentemente da plagioclasio e ausite {{line}} {{/line}} DATA: 1817. ETIMO: dal fr. diabase, prima diorite , prob. der. di base base , poi… …   Dizionario italiano

  • diabase — diabazas statusas T sritis chemija apibrėžtis Bazinė magminė uoliena, susidedanti iš plagioklazo (dažniausiai labradoro) ir augito. atitikmenys: angl. diabase; dolerite rus. диабаз …   Chemijos terminų aiškinamasis žodynas

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