n.1590s, from Greek antimetabole, from anti- "opposite" (see anti-) + metabole "turning about" (see metabolism). if (window.googletag) {googletag.cmd.push(function() { googletag.display('dcomMobileSERPDisplayTopAd-300x250'); });} else {console.error('googletag not defined, dcomMobileSERPDisplayTopAd-300x250');}