specialist

specialist /ˈspɛʃəlɪst/ noun
plural specialists
specialist
/ˈspɛʃəlɪst/
noun
plural specialists
Britannica Dictionary definition of SPECIALIST
[count]
1 
a  : a person who has special knowledge and skill relating to a particular job, area of study, etc. : expert
— compare generalist
b  : a doctor who deals with health problems that relate to a specific area of medicine
— compare general practitioner
2 
: a rank in the U.S. Army that is above the rank of private and below the rank of corporal

— specialist

adjective, always used before a noun