also viva-voce, "by word of mouth," 1580s, Latin, literally "living-voice," ablative of viva vox.
updated on April 08, 2012
英语词源词典收录了45867条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。