- circumvallate[circumvallate 词源字典]
- "Surround with or as if with a rampart", Mid 17th century (as an adjective): from Latin circumvallat- 'surrounded with a rampart', from the verb circumvallare, from circum 'around' + vallare, from vallum 'rampart'. The verb dates from the early 19th century.[circumvallate etymology, circumvallate origin, 英语词源]