no·men con·ser·van·dum \ˈnōmənˌkän(t)sə(r)ˈvandəm\noun (pluralnom·i·na con·ser·van·da \ˈnämənəˌ...də\) Etymology: Latin, name to be preserved : a name that should not be changed; specifically: a biological generic name or other taxon to be preserved by special sanction in exception to the usual rules (as of priority)