— circumvallation , n.
/serr'keuhm val"ayt/ , adj., v., circumvallated, circumvallating .
adj.
1. surrounded by or as if by a rampart.
2. Anat. surrounded by a depression or wall-like ridge.
v.t.
3. to surround with or as if with a rampart.
[ 1655-65; circumvallatus (ptp. of circumvallare to surround with a wall), equiv. to circum- CIRCUM- + vall ( um ) rampart, wall + -atus -ATE 1 ]