n."excessive dryness of hair," 1706, medical Latin, from Greek xerasia "dryness," from xeros "dry," from PIE *ksero- "dry." if (window.googletag) {googletag.cmd.push(function() { googletag.display('dcomMobileSERPDisplayTopAd-300x250'); });} else {console.error('googletag not defined, dcomMobileSERPDisplayTopAd-300x250');}