spe·cial·ism /ˈspɛʃəˌlɪzəm/
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Spe·cial·ism n. Devotion to a particular and restricted part or branch of knowledge, art, or science; as, medical specialism.
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specialism
n 1: the concentration of your efforts on a particular field of
study or occupation
2: the special line of work you have adopted as your career;
"his specialization is gastroenterology" [syn: specialization,
specialisation, specialty, speciality]