roche alum

roche alum
/rohch/, Chem.
an alumlike substance derived from alunite.
[1400-50; roche cliff, rocky height (now obs.), late ME (see ROCK1); appar. partial trans. of MF alum en roque, alun de roche]

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  • Roche alum — Roche al um (Chem.) A kind of alum occuring in small fragments; so called from Rocca, in Syria, whence alum is said to have been obtained; also called {rock alum}. [1913 Webster] …   The Collaborative International Dictionary of English

  • roche alum — /rohch/, Chem. an alumlike substance derived from alunite. [1400 50; roche cliff, rocky height (now obs.), late ME (see ROCK1); appar. partial trans. of MF alum en roque, alun de roche] …   Useful english dictionary

  • alum — ALUM. s. m. Espece de mineral, certain suc condensé qui se trouve dans les mines. Alum de roche. alum de plume. veines, miniere d alum. alum bruslé. eau d alum. laver un livre dans de l eau d alum …   Dictionnaire de l'Académie française

  • rock alum — Roche alum Roche al um (Chem.) A kind of alum occuring in small fragments; so called from Rocca, in Syria, whence alum is said to have been obtained; also called {rock alum}. [1913 Webster] …   The Collaborative International Dictionary of English

  • Rock alum — Rock Rock, n. [OF. roke, F. roche; cf. Armor. roc h, and AS. rocc.] 1. A large concreted mass of stony material; a large fixed stone or crag. See {Stone}. [1913 Webster] Come one, come all! this rock shall fly From its firm base as soon as I. Sir …   The Collaborative International Dictionary of English

  • roach alum — variant of roche alum …   Useful english dictionary

  • Arabis lyrata — Rock Rock, n. [OF. roke, F. roche; cf. Armor. roc h, and AS. rocc.] 1. A large concreted mass of stony material; a large fixed stone or crag. See {Stone}. [1913 Webster] Come one, come all! this rock shall fly From its firm base as soon as I. Sir …   The Collaborative International Dictionary of English

  • Arabis petraea — Rock Rock, n. [OF. roke, F. roche; cf. Armor. roc h, and AS. rocc.] 1. A large concreted mass of stony material; a large fixed stone or crag. See {Stone}. [1913 Webster] Come one, come all! this rock shall fly From its firm base as soon as I. Sir …   The Collaborative International Dictionary of English

  • Balanus balanoides — Rock Rock, n. [OF. roke, F. roche; cf. Armor. roc h, and AS. rocc.] 1. A large concreted mass of stony material; a large fixed stone or crag. See {Stone}. [1913 Webster] Come one, come all! this rock shall fly From its firm base as soon as I. Sir …   The Collaborative International Dictionary of English

  • bodieron — Rock Rock, n. [OF. roke, F. roche; cf. Armor. roc h, and AS. rocc.] 1. A large concreted mass of stony material; a large fixed stone or crag. See {Stone}. [1913 Webster] Come one, come all! this rock shall fly From its firm base as soon as I. Sir …   The Collaborative International Dictionary of English

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