Source : Webster's Revised Unabridged Dictionary (1913)

Caesarean \C[ae]*sa"re*an\, Caesarian \C[ae]*sa"ri*an\, a. [L.
   Caesareus, Caesarianus.]
   Of or pertaining to C[ae]sar or the C[ae]sars; imperial.

   {C[ae]sarean section} (Surg.), the operation of taking a
      child from the womb by cutting through the walls of the
      abdomen and uterus; -- so called because Julius C[ae]sar
      is reported to have been brought into the world by such an
      operation.

Source : WordNet®

caesarian
     adj 1: relating to abdominal delivery [syn: {cesarean}, {cesarian},
             {caesarean}]
     2: of or relating to or in the manner of Julius Caesar [syn: {Caesarean}]