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Algorithm

AL-guh-rith-um /ˈælɡərɪðəm/

nounC1GREGMAT

FormalTechnical

A process or set of rules to be followed in calculations or other problem-solving operations, especially by a computer.

An 'algorithm' is a precise, step-by-step procedure designed to solve a specific problem or perform a specific task. It must be finite, unambiguous, and effective.

The story behind the word. The word 'algorithm' has a fascinating origin, named after the 9th-century Persian mathematician Muhammad ibn Musa al-Khwarizmi. His Latinized name, 'Algorismi', was used to refer to the decimal number system and the rules for calculation using Arabic numerals. Over time, 'algorism' evolved into 'algorithm', referring to any systematic procedure for solving a problem, especially in mathematics and computing.

Word relationships

Procedure: A general term for a way of doing something; 'algorithm' implies a precise, computational procedure.
Method: A particular procedure for accomplishing or approaching something; 'algorithm' is a specific, step-by-step method.
Formula: A mathematical relationship or rule expressed in symbols; 'algorithm' is a sequence of steps, not just a single rule.

Chaos: Complete disorder and confusion, lacking any systematic process.
Randomness: The quality or state of lacking a pattern or predictability, opposite of a structured process.

Commonly confused with

Program: A 'program' is a set of instructions written in a programming language that a computer can execute. An 'algorithm' is the underlying logical sequence of steps that the program implements.

Collocations

complex algorithm
sorting algorithm
machine learning algorithm
develop an algorithm
optimize an algorithm

Example sentences

"The sorting algorithm efficiently organized the large list of numbers in ascending order." In a computer science lecture.
"Social media platforms use complex algorithms to personalize users' news feeds." From a news article on social media.
"The new machine learning algorithm achieved remarkable accuracy in image recognition tasks." In a discussion about artificial intelligence.

Memory hook

An 'ALGORITHM' is a logical 'RHYTHM' of steps to solve a problem. Logical RHYTHM

When not to use

Do not use 'algorithm' for vague instructions or general methods. It implies a precise, executable set of steps.

Fun facts

Al-Khwarizmi's work introduced Indian numerals (which we now call Arabic numerals) and the concept of algebra to the Western world.
Algorithms are the backbone of modern technology, from search engines to GPS navigation and artificial intelligence.