nomen confusum
/ˌnəʊmɛn kənˈfjuːzəm/ /ˌnəʊmən kənˈfjuːzəm/Chiefly Taxonomy
noun
A Latin name that is based on a mixture of more than one species, etc. Also more generally: a confusing name, a word for something that gives the wrong impression.
Origin
Early 20th century. From scientific Latin nomen confusum from classical Latin nōmen + confūsum, neuter singular of confūsus.