Entry 1 sense Webster, 1913 Infirmarian /(ĭn`fẽr*mā"rĭ*an)/ · In·fir·ma·ri·an · IPA /ˌɪn.fɚˈmɛ.ɹi.ən/ 01 n. A person dwelling in, or having charge of, an infirmary, esp. in a monastic institution. 1. A person dwelling in, or having charge of, an infirmary, esp. in a monastic institution.