Lewis & Short

circum-jăcĕo, ĕre, v. n.,

  1. I. to lie round about, border upon (rare; not in Cic.).
          1. (α) Absol., * Cael. ap. Quint. 4, 2, 123: populi circumjacentes, surrounding, Tac. A. 2, 72.
          2. (β) With dat.: Lycaonia et Phrygia circumjacent Europae, Liv. 37, 54, 11: capiti et collo, App. de Deo Socr. p. 54, 33.
  2. * II. Trop., in rhet.: circumjăcentĭa, ĭum, n., the context, Qumt. 9, 4, 29.