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equality
noun
-
equality
,
equalities
a
mathematical
statement
that
two
expressions
have
the
same
value
,
usually
shown
with
the
sign
=
•
In
algebra
class
,
we
learned
that
the
equality
2
+
3
=
5
is
always
true
.
In
algebra
class
,
we
learned
that
the
equality
2
+
3
=
5
is
always
true
.
•
The
scientist
wrote
an
equality
to
describe
the
relationship
between
energy
and
mass
.
The
scientist
wrote
an
equality
to
describe
the
relationship
between
energy
and
mass
.
Adopted
into
mathematical
language
in
the
16th
century
when
the
equal
sign
was
introduced
by
Welsh
mathematician
Robert
Recorde
.
