|1.||of or characterized by opportunism|
|2.||med (of an infection) caused by any microorganism that is harmless to a healthy person but debilitates a person whose immune system has been weakened by disease or drug treatment|
opportunistic op·por·tun·is·tic (ŏp'ər-tōō-nĭs'tĭk, -tyōō-)
Of or relating to an organism capable of causing disease only in a host whose resistance is lowered.
Of or relating to a disease caused by an opportunistic organism.