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expert system

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noun Computers.
  1. a program that gives answers, solutions, or diagnoses, based on available information, by following procedures that attempt to duplicate the thought processes and apply the knowledge of an expert in some particular field.

Origin of expert system

First recorded in 1975–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for expert system

expert system

noun
  1. a computer program that can offer intelligent advice or make intelligent decisions using rule-based programs
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012