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Definition of atom
Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of atom is as below...
Atom (n.) The
smallest
particle
of
matter
that can enter into
combination;
one of the
elementary
constituents
of a
molecule.
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Hexabasic
::
Hexabasic
(a.)
Having
six
hydrogen
atoms or six
radicals
capable
of being
replaced
or
saturated
by
bases;
-- said of
acids;
as,
mellitic
acid is
hexabasic..
Smither
::
Smither
(n.)
Fragments;
atoms;
finders.
Trioxide
::
Trioxide
(n.) An oxide
containing
three atoms of
oxygen;
as,
sulphur
trioxide,
SO3; --
formerly
called
tritoxide..
Unsymmetrical
::
Unsymmetrical
(a.) Being
without
symmetry
of
chemical
structure
or
relation;
as, an
unsymmetrical
carbon
atom..
Polybromide
::
Polybromide
(n.) A
bromide
containing
more than one atom of
bromine
in the
molecule.
Pneumatometer
::
Pneumatometer
(n.) An
instrument
for
measuring
the
amount
of force
exerted
by the lungs in
respiration.
Bi-
::
Bi- () In the
composition
of
chemical
names bi-
denotes
two
atoms,
parts,
or
equivalents
of that
constituent
to the name of which it is
prefixed,
to one of the other
component,
or that such
constituent
is
present
in
double
the
ordinary
proportion;
as,
bichromate,
bisulphide.
Be- and di- are often used
interchangeably..
Tetracid
::
Tetracid
(a.)
Capable
of
neutralizing
four
molecules
of a
monobasic
acid;
having
four
hydrogen
atoms
capable
of
replacement
ba acids or acid
atoms;
-- said of
certain
bases;
thus,
erythrine,
C4H6(OH)4,
is a
tetracid
alcohol..
Monosulphide
::
Monosulphide
(n.) A
sulphide
containing
one atom of
sulphur,
and
analogous
to a
monoxide;
--
contrasted
with a
polysulphide;
as,
galena
is a
monosulphide..
Monad
::
Monad (n.) An atom or
radical
whose
valence
is one, or which can
combine
with, be
replaced
by, or
exchanged
for, one atom of
hydrogen..
Tetrol
::
Tetrol
(n.) A
hypothetical
hydrocarbon,
C4H4,
analogous
to
benzene;
-- so
called
from the four
carbon
atoms in the
molecule..
Tantalum
::
Tantalum
(n.) A rare
nonmetallic
element
found in
certain
minerals,
as
tantalite,
samarskite,
and
fergusonite,
and
isolated
as a dark
powder
which
becomes
steel-gray
by
burnishing.
Symbol
Ta.
Atomic
weight
182.0.
Formerly
called
also
tantalium..
Molecule
::
Molecule
(n.) A group of atoms so
united
and
combined
by
chemical
affinity
that they form a
complete,
integrated
whole,
being the
smallest
portion
of any
particular
compound
that can exist in a free
state;
as, a
molecule
of water
consists
of two atoms of
hydrogen
and one of
oxygen.
Cf.
Atom..
Hecatomb
::
Hecatomb
(n.) A
sacrifice
of a
hundred
oxen or
cattle
at the same time;
hence,
the
sacrifice
or
slaughter
of any large
number
of
victims..
Carbon
::
Carbon
(n.) An
elementary
substance,
not
metallic
in its
nature,
which is
present
in all
organic
compounds.
Atomic
weight
11.97.
Symbol
C. it is
combustible,
and forms the base of
lampblack
and
charcoal,
and
enters
largely
into
mineral
coals.
In its pure
crystallized
state it
constitutes
the
diamond,
the
hardest
of known
substances,
occuring
in
monometric
crystals
like the
octahedron,
etc.
Another
modification
is
graphite,
or
blacklead,
and in this it is soft, and
occurs
in
hexagonal
prisms
or t
Hyo-
::
Hyo- () A
prexif
used in
anatomy,
and
generally
denoting
connection
with the hyoid bone or arch; as,
hyoglossal,
hyomandibular,
hyomental,
etc..
Lanthanum
::
Lanthanum
(n.) A rare
element
of the group of the earth
metals,
allied
to
aluminium.
It
occurs
in
certain
rare
minerals,
as
cerite,
gadolinite,
orthite,
etc., and was so named from the
difficulty
of
separating
it from
cerium,
didymium,
and other rare
elements
with which it is
usually
associated.
Atomic
weight
138.5.
Symbol
La..
Anatomy
::
Anatomy
(n.) The act of
dividing
anything,
corporeal
or
intellectual,
for the
purpose
of
examining
its
parts;
analysis;
as, the
anatomy
of a
discourse..
Polyatomic
::
Polyatomic
(a.)
Having
more than one atom in the
molecule;
consisting
of
several
atoms.
Diatom
::
Diatom
(n.) A
particle
or atom
endowed
with the vital
principle.
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