Definitions of algorithm on the Web:

• a precise rule (or set of rules) specifying how to solve some problem
  wordnetweb.princeton.edu/perl/webwn

• A medical algorithm is any computation, formula, statistical survey, nomogram, or look-up table, useful in healthcare. ...
  en.wikipedia.org/wiki/Algorithm_(medical)

• In the C++ programming language, algorithms are components that perform algorithmic operations on containers and other sequences.ISO/IEC (2003). ISO/IEC 14882:2003(E): Programming Languages - C++ §25 Algorithms library [lib.algorithms] para. 1
  en.wikipedia.org/wiki/Algorithm_(C++)

• In mathematics, computing, linguistics, and related subjects, an algorithm is a finite sequence of instructions, an explicit, step-by-step ...
  en.wikipedia.org/wiki/Algorithm

• A precise step-by-step plan for a computational procedure that begins with an input value and yields an output value in a finite number of steps
  en.wiktionary.org/wiki/algorithm

• algorithmic - of or relating to or having the characteristics of an algorithm
  wordnetweb.princeton.edu/perl/webwn

• The algorithm "made possible the modern world," says Dan Berlinski, in his ambitious book "The Advent of the Algorithm. ...
  www.salon.com/tech/fsp/glossary/

• the set of simple instructions that combine to accomplish a task. Computer codes are algorithms.
  rredc.nrel.gov/solar/glossary/

• A mathematical process or set of rules used for calculation or problem-solving, which is usually undertaken by a computer
  www.mfe.govt.nz/publications/air/atmospheric-dispersion-modelling-jun04/html/page10.html

• A computer program (or set of programs) which is designed to systematically solve a certain kind of problem. WSR-88D radars (NEXRAD) employ algorithms to analyze radar data and automatically determine storm motion, probability of hail, VIL, accumulated rainfall, and several other parameters.
  www.geographic.org/climate/a.html

• A mathematical formula used by search engines to determine which web sites in their database to present in search results, in which order. While search engine algorithms change regularly, primary on-page factors include keyword density and source code optimization. ...
  www.anvilmediainc.com/search-engine-marketing-glossary.html

• a process for completing a task. An encryption algorithm is the process, usually a mathematical process, to encrypt and decrypt messages.
  www2.rad.com/networks/2001/digsig/g.htm

• A formal set of instructions that can be followed to perform a specific task, such as a mathematical formula or a set of instructions in a computer program.
  www.5starsupport.com/info/glossary.htm

• A specific procedure used to modify a signal. For example, the key to a digital compression system is the algorithm that eliminates redundancy.
  shopfort1.com/t1terms.cfm

• A set of ordered steps for solving a problem, such as a mathematical formula or the instructions in a program. a sequence of steps to solve a problem. ...
  www.securityfocus.com/glossary/A