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. 2019
British Dictionary definitions for expert system
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