The Collaborative International Dictionary
Isotrimorphism
Isotrimorphism \I`so*tri*mor"phism\, n. [Iso- + Gr. ? thrice + morfh` form.] Isomorphism between the three forms, severally, of two trimorphous substances.
Wiktionary
isotrimorphism
n. isomorphism between the three forms, severally, of two trimorphous substances.