( BrE also spe·cial·ise ) / ˈspeʃəlaɪz; NAmE / verb
[ v ] specialize (in sth) to become an expert in a particular area of work, study or business; to spend more time on one area of work, etc. than on others :
He specialized in criminal law.
Many students prefer not to specialize too soon.
The shop specializes in hand-made chocolates.
► spe·cial·iza·tion , spe·cial·isa·tion / ˌspeʃəlaɪˈzeɪʃn; NAmE -ləˈz-/ noun [ U , C ]
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WORD ORIGIN
early 17th cent.: from French spécialiser , from spécial special.