I. virgilian
Usage: usually capitalized
variant of vergilian
II. vir·gil·i·an (ˌ)vərˈjilēən, vəˈ-, və̄ˈ-, vəiˈ- adjective
Usage: usually capitalized
Etymology: Virgil, town of southeastern Kansas + English -ian
: of, relating to, or constituting a subdivision of the Pennsylvanian — see geologic time table