natural language

a language used as a native tongue by a group of speakers.

1875–80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
natural language
1.  artificial language Compare formal language a language that has evolved naturally as a means of communication among people
2.  languages of this kind considered collectively

Collins English Dictionary - Complete & Unabridged 10th Edition
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Computing Dictionary

natural language definition

A language spoken or written by humans, as opposed to a language use to program or communicate with computers. Natural language understanding is one of the hardest problems of artificial intelligence due to the complexity, irregularity and diversity of human language and the philosophical problems of meaning.
See also Pleuk grammar development system, proof.
An on-line demonstration (
New York U (
The Free On-line Dictionary of Computing, © Denis Howe 2010
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Example sentences
It comes from two directions: cognitive linguistics and natural language processing.
It is not, however, a matter of the problem being cast in natural language.
Already software is being programmed to tell via natural language whether comments are positive or negative.
Its ability to understand natural language makes it a valuable tool in many different applications.
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