antoninianus
noun
an·to·nin·i·a·nus
ˌantəˌninēˈānəs
plural antoniniani
-ˈāˌnī
: an ancient Roman coin originally worth two denarii
Word History
Etymology
Late Latin, literally, of Antoninus, from Marcus Aurelius Antoninus Caracalla †a.d. 217 Roman emperor who introduced it + Latin -ianus -ian