[no.sol.o.gy] n [prob. fr. NL nosologia, fr. Gk nosos disease + NL -logia -logy] (ca. 1721) 1: a classification or list of diseases
2: a branch of medical science that deals with classification of diseases -- no.so.log.i.cal or no.so.log.ic adj -- no.so.log.i.cal.ly adv