adj.1680s, in reference to Roman emperors Antoninus Pius (ruled 138-161 C.E.) and Marcus Aurelius Antoninus (161-180). if (window.googletag) {googletag.cmd.push(function() { googletag.display('dcomMobileSERPDisplayTopAd-300x250'); });} else {console.error('googletag not defined, dcomMobileSERPDisplayTopAd-300x250');}