Borax bead

Borax bead
Borax Bo"rax, n. [OE. boras, fr. F. borax, earlier spelt borras; cf. LL. borax, Sp. borraj; all fr. Ar. b?rag, fr. Pers. b?rah.] A white or gray crystalline salt, with a slight alkaline taste, used as a flux, in soldering metals, making enamels, fixing colors on porcelain, and as a soap. It occurs native in certain mineral springs, and is made from the boric acid of hot springs in Tuscany. It was originally obtained from a lake in Thibet, and was sent to Europe under the name of tincal. Borax is a pyroborate or tetraborate of sodium, Na2B4O7.10H2O. [1913 Webster]

{Borax bead}. (Chem.) See {Bead}, n., 3. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • borax bead — noun : a bead (sense 4f) having borax as the flux * * * Chem. a bead of fused borax, used in chemical analysis for the identification of certain metal oxides. * * * borax bead, a bead of fused borax, used especially in chemical analysis …   Useful english dictionary

  • Borax bead test — The borax bead test is a traditional part of qualitative inorganic analysis to test for the presence of certain metals.A small loop is made in the end of a platinum wire (as used in the flame test) and heated in a Bunsen flame until red hot. It… …   Wikipedia

  • borax bead — Chem. a bead of fused borax, used in chemical analysis for the identification of certain metal oxides. * * * …   Universalium

  • borax bead test — noun in qualitative inorganic analysis, a test for the presence of certain metallic elements by observing the colours given to a bead of borax in a loop of platinum wire held in the oxidizing and reducing parts …   Wiktionary

  • Bead — (b[=e]d), n. [OE. bede prayer, prayer bead, AS. bed, gebed, prayer; akin to D. bede, G. bitte, AS. biddan, to ask, bid, G. bitten to ask, and perh. to Gr. pei qein to persuade, L. fidere to trust. Beads are used by the Roman Catholics to count… …   The Collaborative International Dictionary of English

  • Bead and butt — Bead Bead (b[=e]d), n. [OE. bede prayer, prayer bead, AS. bed, gebed, prayer; akin to D. bede, G. bitte, AS. biddan, to ask, bid, G. bitten to ask, and perh. to Gr. pei qein to persuade, L. fidere to trust. Beads are used by the Roman Catholics… …   The Collaborative International Dictionary of English

  • Bead mold — Bead Bead (b[=e]d), n. [OE. bede prayer, prayer bead, AS. bed, gebed, prayer; akin to D. bede, G. bitte, AS. biddan, to ask, bid, G. bitten to ask, and perh. to Gr. pei qein to persuade, L. fidere to trust. Beads are used by the Roman Catholics… …   The Collaborative International Dictionary of English

  • bead mould — Bead Bead (b[=e]d), n. [OE. bede prayer, prayer bead, AS. bed, gebed, prayer; akin to D. bede, G. bitte, AS. biddan, to ask, bid, G. bitten to ask, and perh. to Gr. pei qein to persuade, L. fidere to trust. Beads are used by the Roman Catholics… …   The Collaborative International Dictionary of English

  • Bead tool — Bead Bead (b[=e]d), n. [OE. bede prayer, prayer bead, AS. bed, gebed, prayer; akin to D. bede, G. bitte, AS. biddan, to ask, bid, G. bitten to ask, and perh. to Gr. pei qein to persuade, L. fidere to trust. Beads are used by the Roman Catholics… …   The Collaborative International Dictionary of English

  • Bead tree — Bead Bead (b[=e]d), n. [OE. bede prayer, prayer bead, AS. bed, gebed, prayer; akin to D. bede, G. bitte, AS. biddan, to ask, bid, G. bitten to ask, and perh. to Gr. pei qein to persuade, L. fidere to trust. Beads are used by the Roman Catholics… …   The Collaborative International Dictionary of English

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”