[nomen du.bi.um] n, pl nomina du.bia [NL, doubtful name] (1937): a taxonomic name that cannot be assigned with certainty to any taxonomic group because the description is insufficient for identification and the original specimens no longer exist
NOMEN DUBIUM
Meaning of NOMEN DUBIUM in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012