[his.to.pa.thol.o.gy] n [ISV] (1896) 1: a branch of pathology concerned with the tissue changes characteristic of disease
2: the tissue changes that affect a part or accompany a disease -- his.to.path.o.log.ic or his.to.path.o.log.i.cal adj -- his.to.path.o.log.i.cal.ly adv -- his.to.pa.thol.o.gist n