specialize (v.)youdaoicibaDictYouDict[specialize 词源字典]
1610s, "to indicate specially," from special (adj.) + -ize, perhaps on model of French spécialiser. Sense of "engage in a special study or line of business" is first attested 1881; biological sense is from 1851. Related: Specialized; specializing.[specialize etymology, specialize origin, 英语词源]