1) Ecology terminology 
Amphotropism or amphotropic indicates that a pathogen like a virus or a bacterium has a wide host range and can infect more than one species or cell culture line. ...
amphotropism, amphotropic The tendency to move either toward or away from a stimulus. Related 'around, round, surrounding' units: ambi-; circ-; circum-; cyclo-, -cycle; gyro-; peri-.