2. System of communication in which arbitrary groups of letters, numbers, or symbols represent units of plain text of varying length.
Source(s):
CNSSI 4009-2015
[Superseded]
from
NSTISSI No. 7002
1. A set of instructions for a computer.
Source(s):
CNSSI 4009-2015
[Superseded]
from
Merriam-Webster