#词种起源# Xeno- from Xenophobia, ξένος, stranger, guest. 印欧词根ghos-ti- 为母，孳生1拉丁语hospes (stem hospit-), hospital, hospitable, host, hostage; 2拉丁语hostis, enemy(< "stranger"), hostile, hostility; 3古斯堪的纳维亚语一支gestr, guest.
