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Definition of radical
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 radical is as below...
Radical
(n.) A
primitive
word; a
radix,
root, or
simple,
underived,
uncompounded
word; an
etymon..
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Ultra-
::
Ultra-
(a.) A
prefix
from the Latin ultra
beyond
(see
Ulterior),
having
in
composition
the
signification
beyond,
on the other side,
chiefly
when
joined
with words
expressing
relations
of
place;
as,
ultramarine,
ultramontane,
ultramundane,
ultratropical,
etc. In other
relations
it has the sense of
excessively,
exceedingly,
beyond
what is
common,
natural,
right,
or
proper;
as,
ultraconservative;
ultrademocratic,
ultradespotic,
ultraliberal,
ultraradical,
etc..
Ethyl
::
Ethyl (n.) A
monatomic,
hydrocarbon
radical,
C2H5 of the
paraffin
series,
forming
the
essential
radical
of
ethane,
and of
common
alcohol
and
ether..
Imide
::
Imide (n.) A
compound
with, or
derivative
of, the imido
group;
specif.,
a
compound
of one or more acid
radicals
with the imido
group,
or with a
monamine;
hence,
also, a
derivative
of
ammonia,
in which two atoms of
hydrogen
have been
replaced
by
divalent
basic or acid
radicals;
--
frequently
used as a
combining
form; as,
succinimide..
Alcohol
::
Alcohol
(n.) A class of
compounds
analogous
to vinic
alcohol
in
constitution.
Chemically
speaking,
they are
hydroxides
of
certain
organic
radicals;
as, the
radical
ethyl forms
common
or ethyl
alcohol
(C2H5.OH);
methyl
forms
methyl
alcohol
(CH3.OH)
or wood
spirit;
amyl forms amyl
alcohol
(C5H11.OH)
or fusel oil, etc..
Conjugate
::
Conjugate
(a.)
Agreeing
in
derivation
and
radical
signification;
-- said of
words.
Zircofluoride
::
Zircofluoride
(n.) A
double
fluoride
of
zirconium
and
hydrogen,
or some other
positive
element
or
radical;
as,
zircofluoride
of
sodium..
Radical
::
Radical
(a.) A
radical
vessel.
See under
Radical,
a..
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..
Surd
::
Surd (a.)
Involving
surds;
not
capable
of being
expressed
in
rational
numbers;
radical;
irrational;
as, a surd
expression
or
quantity;
a surd
number..
Propidene
::
Propidene
(n.) The
unsymmetrical
hypothetical
hydrocarbon
radical,
CH3.CH2.CH,
analogous
to
ethylidene,
and
regarded
as the type of
certain
derivatives
of
propane;
--
called
also
propylidene..
Stythe
::
Styryl
(n.) A
hypothetical
radical
found in
certain
derivatives
of
styrolene
and
cinnamic
acid; --
called
also
cinnyl,
or
cinnamyl..
Amide
::
Amide (n.) A
compound
formed
by the union of
amidogen
with an acid
element
or
radical.
It may also be
regarded
as
ammonia
in which one or more
hydrogen
atoms have been
replaced
by an acid atom or
radical.
Amidogen
::
Amidogen
(n.) A
compound
radical,
NH2, not yet
obtained
in a
separate
state,
which may be
regarded
as
ammonia
from the
molecule
of which one of its
hydrogen
atoms has been
removed;
--
called
also the amido
group,
and in
composition
represented
by the form
amido..
Propyl
::
Propyl
(n.) The
hypothetical
radical
C3H7,
regarded
as the
essential
residue
of
propane
and
related
compounds..
Decylic
::
Decylic
(a.)
Allied
to, or
containing,
the
radical
decyl..
Eradicative
::
Eradicative
(n.) A
medicine
that
effects
a
radical
cure.
Menthyl
::
Menthyl
(n.) A
compound
radical
forming
the base of
menthol.
Carbamine
::
Carbamine
(n.) An
isocyanide
of a
hydrocarbon
radical.
The
carbamines
are
liquids,
usually
colorless,
and of
unendurable
odor..
Metathesis
::
Metathesis
(n.) The act,
process,
or
result
of
exchange,
substitution,
or
replacement
of atoms and
radicals;
thus, by
metathesis
an acid gives up all or part of its
hydrogen,
takes on an
equivalent
amount
of a metal or base, and forms a
salt..
Valence
::
Valence
(n.) The
degree
of
combining
power of an atom (or
radical)
as shown by the
number
of atoms of
hydrogen
(or of other
monads,
as
chlorine,
sodium,
etc.) with which it will
combine,
or for which it can be
substituted,
or with which it can be
compared;
thus, an atom of
hydrogen
is a
monad,
and has a
valence
of one; the atoms of
oxygen,
nitrogen,
and
carbon
are
respectively
dyads,
triads,
and
tetrads,
and have a
valence
respectively
of two,
three,
and
four..
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