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radical
noun
the
√
sign
or
an
expression
containing
a
root
in
mathematics
,
such
as
√7
•
In
her
homework
,
Mia
forgot
to
write
the
radical
above
the
number
16
.
In
her
homework
,
Mia
forgot
to
write
the
radical
above
the
number
16
.
•
The
teacher
explained
how
to
simplify
a
radical
by
factoring
the
number
inside
.
The
teacher
explained
how
to
simplify
a
radical
by
factoring
the
number
inside
.
Mathematical
use
dates
from
the
17th
century
,
calling
the
root
symbol
‘
radical
sign
’
because
roots
in
Latin
are
radices
.
noun
a
person
who
holds
or
supports
extreme
political
or
social
views
and
wants
complete
change
•
The
young
radical
organized
nationwide
protests
demanding
climate
action
.
The
young
radical
organized
nationwide
protests
demanding
climate
action
.
•
Many
considered
the
novelist
a
radical
for
her
outspoken
feminist
ideas
.
Many
considered
the
novelist
a
radical
for
her
outspoken
feminist
ideas
.
Political
sense
arose
in
late
18th-century
Britain
,
where
Reformers
seeking
‘
radical
’
change
in
Parliament
were
called
Radicals
.
