ˈbī+ˌ- adjective
Etymology: biform from Latin biformis, from bi- bi- (I) + -formis (from forma form); biformed from Latin biform is + English -ed — more at form
1. : combining the qualities or forms of two distinct kinds of individuals
a biform crystal
the biform body of a satyr
2. : having or appearing in two dissimilar guises — used of characters in classical mythology that appeared to mortals in other than their customary bodily form
whence Europa fled with biform Jove