Found 1 items, similar to Fe2O3.
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, 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.
Bower-Barff process \Bow“er-Barff” proc`ess\
A certain process for producing upon articles of iron or
steel an adherent coating of the magnetic oxide of iron
(which is not liable to corrosion by air, moisture, or
ordinary acids). This is accomplished by producing, by
oxidation at about 1600[deg] F. in a closed space, a coating
containing more or less of the ferric oxide (Fe2O3
) and the
subsequent change of this in a reduced atmosphere to the
magnetic oxide (Fe2O4
[Webster 1913 Suppl.]
, a. [L. ferrum iron: cf. F. ferrique. See
Pertaining to, derived from, or containing iron. Specifically
(Chem.), denoting those compounds in which iron has a higher
valence than in the ferrous compounds; as, ferric oxide;
(Chem.), an acid, H2FeO4
, which is not known
in the free state, but forms definite salts, analogous to
the chromates and sulphates.
(Chem.), sesquioxide of iron, Fe2O3
hematite. See Hematite