What is the Latin word for heterogeneous?

The usual Latin words for “heterogeneous” are dīversus, dissimilis. The right choice depends on the sense; see the distinctions below.

English → Latin

“heterogeneous” in Latin

dīversusopposite; separate, apart; diverse, different dissimilisunlike, dissimilar, different

The English word heterogeneous itself goes back to Latin heterogeneus.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

heterogeneous

diversi or alieni generis: dissimilis (unlike). Things that are heterogeneous, diveisissimae res; res diversae inter se (Sall.).

Quick answer

What is the Latin word for heterogeneous?: The usual Latin words for “heterogeneous” are dīversus, dissimilis. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.