[cir.cum.val.late] vt -lat.ed ; -lat.ing [L circumvallatus, pp. of circumvallare to surround with siege works, fr. circum- + vallum rampart--more at wall] (ca. 1798): to surround by or as if by a rampart -- cir.cum.val.la.tion n
[2]cir.cum.val.late adj (ca. 1852): being any of approximately 12 large papillae near the back of the tongue each of which is surrounded with a marginal sulcus and supplied with taste buds responsive esp. to bitter flavors