[no.men con.ser.van.dum] n, pl no.mi.na con.ser.van.da [NL, name to be kept] (ca. 1925): a biological taxonomic name that is preserved by special sanction in exception to the usual rules
NOMEN CONSERVANDUM
Meaning of NOMEN CONSERVANDUM in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012