[kuh n-suhl-tnt]


a person who gives professional or expert advice: a consultant on business methods.
a person who consults someone or something.

Origin of consultant

1690–1700; (< F) < Latin consultant- (stem of consultāns, present participle of consultāre). See consult, -ant Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for consultant



  1. a senior physician, esp a specialist, who is asked to confirm a diagnosis or treatment or to provide an opinion
  2. a physician or surgeon holding the highest appointment in a particular branch of medicine or surgery in a hospital
a specialist who gives expert advice or information
a person who asks advice in a consultation
Derived Formsconsultancy, noun
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

Word Origin and History for consultant

1690s, of persons going to oracles, from consult + -ant. Of physicians, from 1878; meaning "one qualified to give professional advice" is first attested 1893 in a Sherlock Holmes story. Related: Consultancy (1955).

Online Etymology Dictionary, © 2010 Douglas Harper

consultant in Medicine




A physician or surgeon who does not take actual charge of a patient, but acts in an advisory capacity to the patient's primary physician.
Such a member of a hospital staff who may advise the attending physician or surgeon.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.