Adjective
having
the
shape
of
the
Greek
letter
Noun
.
Verb
To
calculate
the
differences
between
the
characters
in
an
enciphered
text
and
the
characters
a
fixed
number
of
positions
previous
.
Adjective
having
the
shape
of
the
Greek
letter
Noun
The
fourth
letter
of
the
modern
Greek alphabet
''[[Δ]]'', ''[[δ]]''.
Verb
To
calculate
the
differences
between
the
characters
in
an
enciphered
text
and
the
characters
a
fixed
number
of
positions
previous
.