The Collaborative International Dictionary of English v.0.48:

Cicatrix \Ci*ca"trix\, n.; pl. Cicatrices. [L.] (Med.)
   The pellicle which forms over a wound or breach of continuity
   and completes the process of healing in the latter, and which
   subsequently contracts and becomes white, forming the scar.
   [1913 Webster]

WordNet (r) 3.0 (2006):

cicatrix
    n 1: a mark left (usually on the skin) by the healing of injured
         tissue [syn: scar, cicatrix, cicatrice]

Moby Thesaurus II by Grady Ward, 1.0:

100 Moby Thesaurus words for "cicatrix":
   birthmark, blackhead, blaze, bleb, blemish, blister, blotch, brand,
   bulla, caste mark, check, checkmark, comedo, crack, crater, craze,
   cut, dapple, defacement, defect, deformation, deformity,
   discoloration, disfiguration, disfigurement, distortion, dot,
   earmark, engraving, fault, flaw, fleck, flick, freckle, gash,
   graving, hack, hemangioma, hickey, jot, keloid, kink, lentigo,
   macula, mark, marking, milium, mole, mottle, needle scar, nevus,
   nick, notch, patch, pimple, pit, pock, pockmark, point, polka dot,
   port-wine mark, port-wine stain, prick, puncture, pustule, rift,
   scab, scar, scarification, score, scotch, scratch, scratching,
   sebaceous cyst, speck, speckle, splash, split, splotch, spot,
   stain, stigma, strawberry mark, sty, tattoo, tattoo mark, tick,
   tittle, track, twist, verruca, vesicle, wale, warp, wart,
   watermark, weal, welt, wen, whitehead