To understand ‘cicatrise’ it would help to know what a ‘cicatrix’ is.
cic·a·trix /ˈsɪkətrɪks, sɪˈkeɪtrɪks/
–noun, plural cic·a·tri·ces /ˌsɪkəˈtraɪsiz/
1. Physiology. new tissue that forms over a wound and later contracts into a scar.
2. Botany. a scar left by a fallen leaf, seed, etc.
Also, cic·a·trice /ˈsɪkətrɪs/
[Origin: 1350-1400; ME < L: scar]
cic·a·tri·cial /ˌsɪkəˈtrɪʃəl/, adjective
ci·cat·ri·cose /sɪˈkætrɪˌkoʊs, ˈsɪkə-/, adjective