Definition of specialists:
(n) :
Someone who is an expert in, or devoted to, some specific branch of study or research.
(adj) :
(British) Specialised, involving detailed knowledge of a restricted topic.
(n) :
(medicine) A physician whose practice is limited to a particular branch of medicine or surgery.
(n) :
(sports) A player on a team who primarily employs one particular skill or takes one particular role.
(n) :
(US, military) Any of several non-commissioned ranks corresponding to that of corporal.
(n) :
An organism that is specialized for a particular environment.