doctor

Definition

noun
  1. a person who has trained in medicine and is qualified to examine people when they are ill to find out what is wrong with them and to prescribe a course of treatment
  2. a title given to a qualified person who is registered with the General Medical Council
    (Note Doctor is shortened to Dr when written before a name.)
COMMENT In the UK surgeons are traditionally not called ’Doctor’, but are addressed as ’Mr’, ’Mrs’, etc. The title ’doctor’ is also applied to persons who have a higher degree from a university in a non-medical subject. So ’Dr Jones’ may have a degree in music, or in any other subject without a connection with medicine.
Medical-Glossary.com
www.medical-glossary.com/definition/doctor.html