halotrichite

halotrichite
Feather Feath"er (f[e^][th]"[~e]r), n. [OE. fether, AS. fe[eth]er; akin to D. veder, OHG. fedara, G. feder, Icel. fj["o][eth]r, Sw. fj["a]der, Dan. fj[ae]der, Gr. ptero`n wing, feather, pe`tesqai to fly, Skr. pattra wing, feather, pat to fly, and prob. to L. penna feather, wing. [root]76, 248. Cf. {Pen} a feather.] 1. One of the peculiar dermal appendages, of several kinds, belonging to birds, as contour feathers, quills, and down. [1913 Webster]

Note: An ordinary feather consists of the quill or hollow basal part of the stem; the shaft or rachis, forming the upper, solid part of the stem; the vanes or webs, implanted on the rachis and consisting of a series of slender lamin[ae] or barbs, which usually bear barbules, which in turn usually bear barbicels and interlocking hooks by which they are fastened together. See {Down}, {Quill}, {Plumage}.

2. Kind; nature; species; -- from the proverbial phrase, ``Birds of a feather,'' that is, of the same species. [R.] [1913 Webster]

I am not of that feather to shake off My friend when he must need me. --Shak. [1913 Webster]

3. The fringe of long hair on the legs of the setter and some other dogs. [1913 Webster]

4. A tuft of peculiar, long, frizzly hair on a horse. [1913 Webster]

5. One of the fins or wings on the shaft of an arrow. [1913 Webster]

6. (Mach. & Carp.) A longitudinal strip projecting as a fin from an object, to strengthen it, or to enter a channel in another object and thereby prevent displacement sidwise but permit motion lengthwise; a spline. [1913 Webster]

7. A thin wedge driven between the two semicylindrical parts of a divided plug in a hole bored in a stone, to rend the stone. --Knight. [1913 Webster]

8. The angular adjustment of an oar or paddle-wheel float, with reference to a horizontal axis, as it leaves or enters the water. [1913 Webster]

Note: Feather is used adjectively or in combination, meaning composed of, or resembling, a feather or feathers; as, feather fan, feather-heeled, feather duster. [1913 Webster]

{Feather alum} (Min.), a hydrous sulphate of alumina, resulting from volcanic action, and from the decomposition of iron pyrites; -- called also {halotrichite}. --Ure.

{Feather bed}, a bed filled with feathers.

{Feather driver}, one who prepares feathers by beating.

{Feather duster}, a dusting brush of feathers.

{Feather flower}, an artifical flower made of feathers, for ladies' headdresses, and other ornamental purposes.

{Feather grass} (Bot.), a kind of grass ({Stipa pennata}) which has a long feathery awn rising from one of the chaffy scales which inclose the grain.

{Feather maker}, one who makes plumes, etc., of feathers, real or artificial.

{Feather ore} (Min.), a sulphide of antimony and lead, sometimes found in capillary forms and like a cobweb, but also massive. It is a variety of Jamesonite.

{Feather shot}, or {Feathered shot} (Metal.), copper granulated by pouring into cold water. --Raymond.

{Feather spray} (Naut.), the spray thrown up, like pairs of feathers, by the cutwater of a fast-moving vessel.

{Feather star}. (Zo["o]l.) See {Comatula}.

{Feather weight}. (Racing) (a) Scrupulously exact weight, so that a feather would turn the scale, when a jockey is weighed or weighted. (b) The lightest weight that can be put on the back of a horse in racing. --Youatt. (c) In wrestling, boxing, etc., a term applied to the lightest of the classes into which contestants are divided; -- in contradistinction to {light weight}, {middle weight}, and {heavy weight}.

{A feather in the cap} an honour, trophy, or mark of distinction. [Colloq.]

{To be in full feather}, to be in full dress or in one's best clothes. [Collog.]

{To be in high feather}, to be in high spirits. [Collog.]

{To cut a feather}. (a) (Naut.) To make the water foam in moving; in allusion to the ripple which a ship throws off from her bows. (b) To make one's self conspicuous. [Colloq.]

{To show the white feather}, to betray cowardice, -- a white feather in the tail of a cock being considered an indication that he is not of the true game breed. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • Halotrichite — Halotrichite, also known as feather alum , is a highly hydrated sulfate of aluminium and iron. It is formed by the weathering and decomposition of pyrite commonly near or in volcanic vents. Its chemical formula is FeAl2(SO4)4 sdot;22H2O. It forms …   Wikipedia

  • Halotrichite — Hal*o*tri chite (h[a^]l*[ o]*tr[imac] k[imac]t), n. [Gr. a ls sea + qri x, tricho s, hair.] (Min.) An iron alum occurring in silky fibrous aggregates of a yellowish white color. [1913 Webster] …   The Collaborative International Dictionary of English

  • halotrichite — halotrichitas statusas T sritis chemija apibrėžtis Mineralas. formulė FeAl₂[SO₄]₄·22H₂O atitikmenys: angl. halotrichite rus. галотрихит …   Chemijos terminų aiškinamasis žodynas

  • halotrichite — haˈlä.trəˌkīt noun ( s) Etymology: German halotrichit, from hal + trich + it ite 1. : a mineral FeAl2(SO4)4.22H2O consisting of a hydrous iron aluminum sulfate 2. : any of several sulfates similar to halotrichite in construction and habit …   Useful english dictionary

  • halotrichite — /ha lo treuh kuyt /, n. a mineral, iron alum, isomorphous with pickeringite, occurring in the form of yellowish fibers. [1839; HALO + TRICHITE] * * * ▪ mineral       a sulfate mineral containing aluminum and iron [FeAl2(SO4)4·22H2O]. If more than …   Universalium

  • halotrichite — ha·lot·ri·chite …   English syllables

  • Halotrichit — Haarförmiger Halotrichit aus der Golden Queen Mine, Soledad Mountain, Golden Queen, Kern County, Kalifornien, USA (Größe: 5.2 x 4.2 x 3.3 cm) Chemische Formel Fe2+Al2[SO4]4 • 22 H2O …   Deutsch Wikipedia

  • Eisenalaun — Halotrichit Chemische Formel Fe2+Al2[SO4]4 • 22 H2O Mineralklasse Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O Mit ausschließlich mittelgroßen Kationen 7.CB.85 (9. Aufl.) ; VI/C.12 …   Deutsch Wikipedia

  • Federalaun — Halotrichit Chemische Formel Fe2+Al2[SO4]4 • 22 H2O Mineralklasse Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O Mit ausschließlich mittelgroßen Kationen 7.CB.85 (9. Aufl.) ; VI/C.12 …   Deutsch Wikipedia

  • Haarsalz — Halotrichit Chemische Formel Fe2+Al2[SO4]4 • 22 H2O Mineralklasse Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O Mit ausschließlich mittelgroßen Kationen 7.CB.85 (9. Aufl.) ; VI/C.12 …   Deutsch Wikipedia

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