— opportunistically , adv.
/op'euhr tooh nis"tik, -tyooh-/ , adj.
1. adhering to a policy of opportunism; practicing opportunism.
2. Pathol.
a. (of a microorganism) causing disease only under certain conditions, as when a person's immune system is impaired.
b. (of a disease or infection) caused by such an organism: Pneumocystis pneumonia is an opportunistic disease that often strikes victims of AIDS.
[ 1890-95; OPPORTUNIST + -IC ]