Found 1 items, similar to Fe3O4.
English → English
, n. [Cf. AS. scealu, scalu, a shell, parings; akin
to D. schaal, G. schale, OHG. scala, Dan. & Sw. skal a shell,
Dan. ski[ae]l a fish scale, Goth. skalja tile, and E. shale,
shell, and perhaps also to scale of a balance; but perhaps
rather fr. OF. escale, escaile, F. ['e]caille scale of a
fish, and ['e]cale shell of beans, pease, eggs, nuts, of
German origin, and akin to Goth. skalja, G. schale. See
1. (Anat.) One of the small, thin, membranous, bony or horny
pieces which form the covering of many fishes and
reptiles, and some mammals, belonging to the dermal part
of the skeleton, or dermoskeleton. See Cycloid
, and Ganoid
Fish that, with their fins and shining scales,
Glide under the green wave. --Milton.
2. Hence, any layer or leaf of metal or other material,
resembling in size and thinness the scale of a fish; as, a
scale of iron, of bone, etc.
3. (Zo["o]l.) One of the small scalelike structures covering
parts of some invertebrates, as those on the wings of
Lepidoptera and on the body of Thysanura; the elytra of
certain annelids. See Lepidoptera
4. (Zo["o]l.) A scale insect. (See below.)
5. (Bot.) A small appendage like a rudimentary leaf,
resembling the scales of a fish in form, and often in
arrangement; as, the scale of a bud, of a pine cone, and
the like. The name is also given to the chaff on the stems
6. The thin metallic side plate of the handle of a
pocketknife. See Illust. of Pocketknife
7. An incrustation deposit on the inside of a vessel in which
water is heated, as a steam boiler.
8. (Metal.) The thin oxide which forms on the surface of iron
forgings. It consists essentially of the magnetic oxide,
. Also, a similar coating upon other metals.
(Zo["o]l.), a hydrophyllium.
. (Zo["o]l.) See under Ganoid
(Mil.), armor made of small metallic scales
overlapping, and fastened upon leather or cloth.
(Zo["o]l.), the tiger beetle.
(Zo["o]l.), a carp having normal scales.
(Zo["o]l.), any one of numerous species of
small hemipterous insects belonging to the family
, in which the females, when adult, become
more or less scalelike in form. They are found upon the
leaves and twigs of various trees and shrubs, and often do
great damage to fruit trees. See Orange scale
(Bot.), any leafy-stemmed moss of the order
; -- so called from the small imbricated
scalelike leaves of most of the species. See Hepatica
2, and Jungermannia
([imac]"[u^]rn), a. [AS. [=i]ren, [=i]sen. See
1. Of, or made of iron; consisting of iron; as, an iron bar,
2. Resembling iron in color; as, iron blackness.
3. Like iron in hardness, strength, impenetrability, power of
endurance, insensibility, etc.; as:
(a) Rude; hard; harsh; severe.
Iron years of wars and dangers. --Rowe.
Jove crushed the nations with an iron rod.
(b) Firm; robust; enduring; as, an iron constitution.
(c) Inflexible; unrelenting; as, an iron will.
(d) Not to be broken; holding or binding fast; tenacious.
“Him death's iron sleep oppressed.”
Note: Iron is often used in composition, denoting made of
iron, relating to iron, of or with iron; producing
iron, etc.; resembling iron, literally or figuratively,
in some of its properties or characteristics; as,
iron-shod, iron-sheathed, iron-fisted, iron-framed,
iron-handed, iron-hearted, iron foundry or
(a) (Myth.) The age following the golden, silver, and
bronze ages, and characterized by a general
degeneration of talent and virtue, and of literary
excellence. In Roman literature the Iron Age is
commonly regarded as beginning after the taking of
Rome by the Goths, A. D. 410.
(b) (Arch[ae]ol.) That stage in the development of any
people characterized by the use of iron implements in
the place of the more cumbrous stone and bronze.
, a cement for joints, composed of cast-iron
borings or filings, sal ammoniac, etc.
(Min.), a yellowish clay containing a large
proportion of an ore of iron.
, a German, and before that Prussian, order of
military merit; also, the decoration of the order.
, a golden crown set with jewels, belonging
originally to the Lombard kings, and indicating the
dominion of Italy. It was so called from containing a
circle said to have been forged from one of the nails in
the cross of Christ.
(Min.), an opaque, flintlike, ferruginous
variety of quartz.
, a maker of iron castings.
, the place where iron castings are made.
, a furnace for reducing iron from the ore, or
for melting iron for castings, etc.; a forge; a
reverberatory; a bloomery.
, a headpiece of iron or steel, shaped like a hat
with a broad brim, and used as armor during the Middle
, a locomotive engine. [Colloq.]
, a solution of an iron salt, used as a mordant
(Cotton Manuf.), a name for the self-acting
or Iron mould
, a yellow spot on cloth stained
by rusty iron.
(Min.), any native compound of iron from which the
metal may be profitably extracted. The principal ores are
magnetite, hematite, siderite, limonite, G["o]thite,
turgite, and the bog and clay iron ores.
(Min.), common pyrites, or pyrite. See
, an iron ore in grains, usually the magnetic iron
ore, formerly used to sand paper after writing.
, the thin film which forms on the surface of
wrought iron in the process of forging. It consists
essentially of the magnetic oxide of iron, Fe3O4
, a furnace where iron is smelted, or a forge,
rolling mill, or foundry, where it is made into heavy
work, such as shafting, rails, cannon, merchant bar, etc.
(m[a^]g"n[e^]t), n. [OE. magnete, OF. magnete,
L. magnes, -etis, Gr. Magnh^tis li`qos a magnet, metal that
looked like silver, prop., Magnesian stone, fr. Gr.
Magnhsi`a, a country in Thessaly. Cf. Magnesia
1. The loadstone; a species of iron ore (the ferrosoferric or
magnetic ore, Fe3O4
) which has the property of
attracting iron and some of its ores, and, when freely
suspended, of pointing to the poles; -- called also
Dinocrates began to make the arched roof of the
temple of Arsino["e] all of magnet, or this
Two magnets, heaven and earth, allure to bliss,
The larger loadstone that, the nearer this.
2. (Physics) A bar or mass of steel or iron to which the
peculiar properties of the loadstone have been imparted;
-- called, in distinction from the loadstone, an
Note: An artificial magnet, produced by the action of an
electrical current, is called an electro-magnet
(Physics & Elec.), a magnet used for producing
and maintaining a magnetic field; -- used especially of
the stationary or exciting magnet of a dynamo or
electromotor in distinction from that of the moving
portion or armature.
, n. (Min.)
An oxide of iron (Fe3O4
) occurring in isometric crystals,
also massive, of a black color and metallic luster. It is
readily attracted by a magnet and sometimes possesses
polarity, being then called loadstone
. It is an important
iron ore. Called also magnetic iron
, a. [Cf. F. multiple, and E. quadruple,
Containing more than once, or more than one; consisting of
more than one; manifold; repeated many times; having several,
or many, parts.
Law of multiple proportion
(Chem.), the generalization that
when the same elements unite in more than one proportion,
forming two or more different compounds, the higher
proportions of the elements in such compounds are simple
multiples of the lowest proportion, or the proportions are
connected by some simple common factor; thus, iron and
oxygen unite in the proportions FeO
in which compounds, considering the oxygen, 3 and 4 are
simple multiplies of 1. Called also the Law of Dalton
, from its discoverer.
, a branch of advanced mathematics that
treats of operations upon units compounded of two or more
(Biol.), a coalescence of many cells
(as where an indefinite number of am[oe]boid cells flow
together into a single mass) from which conjugation proper
and even fertilization may have been evolved.
. (Bot.) See Collective fruit
(Astron.), several stars in close proximity,
which appear to form a single system.