Dimorphous is a term used to describe something that has two distinct forms or phases. Synonyms for dimorphous include bifurcated, dichotomous, dual, twofold, double, two-part, and diptych. These words all convey the sense of two distinct but related parts or aspects. Other synonyms for dimorphous include binary, duplex, diploid, and dimerous, which all suggest a pairing or duality. Some related words that are not exact synonyms for dimorphous include polymorphic, multiform, and variational, which suggest multiple forms or variations rather than just two. Overall, the term dimorphous is a useful concept in describing natural phenomena that occur in two distinct but related forms.