Definitions of algebra

A
branch
of
mathematics
using
letters
and
other
symbols
to
represent
quantities.

The
science
of
calculating
by
symbols,
thus
forming
a
kind
of
universal
arithmetic. .

Algebraic.

The
science
of
quantity
in
general;
calculation
by
symbols.

Universal
arithmetic,
in
which
symbols
are
employed
to
denote
operation,
and
letters
to
represent
number
and
quantity.

Arithmetic
by
signs
commonly
the
letters
of
the
alphabet
the
first
letters,
a,
b,
c,
d, &
c.,
represent
known
quantities,
and
the
last
letters,
w,
x,
y,
z,
unknown
quantities.
X