specialist

B2 · Upper Intermediate Countable noun Medicine

n. a doctor who focuses on one specific part of the body or a certain type of illness.

n. a physician whose practice is limited to a particular branch of medicine or surgery.

“My family doctor sent me to see a heart specialist for more tests.”

“After the initial diagnosis, the patient was referred to a specialist in oncology for a more detailed treatment plan.”

C1 · Advanced Countable noun American English · Technical

n. a specific rank in the U.S. Army for a soldier with technical skills.

n. an enlisted rank in the United States Army, typically corresponding to the pay grade of E-4, above private first class.

“He was promoted to specialist after completing his technical training.”

“The specialist was responsible for maintaining the unit's advanced communication equipment during the field exercise.”

B2 · Upper Intermediate British English

adj. relating to a very specific subject that requires deep knowledge.

adj. involving or requiring detailed, expert knowledge of a restricted or specific topic.

“The library has a large collection of specialist books on local plants.”

“The journal publishes specialist articles that are often too technical for the average reader to understand.”