词根：-vac-, -vacu-, -van-, -void-

【词根含义】：空

【词根来源】：-vac-来源于拉丁语动词vac.o, vac.are, vac.avi, vac.atum(空);-vacu-来源于拉丁语动词vacuo, -are, -avi, -atus(使空); -van-来源于拉丁语形容词van.us, van.a, van.um(空);-void-来源于古法语vuide(空的)。均可追溯至原始印欧语wan-(缺乏的)。

【同源单词】：vacancy, vacant, vacate, vacation, vacationist

词根词缀：vacu-

【来源及含义】Latin: from vacare, "to empty"

【相关词根词缀】Related "empty" word units: ceno-; void.

【同源单词】abevacuation, daycation, daycationer, evacuant, evacuate, evacuation