We don't have synonyms for captation yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are adaptation, captain and caption.
(n) :
(obsolete) A courting of favor or applause, by flattery or address; a captivating quality; an attraction
(n) :
Misspelling of coaptation. [The bringing together of two parts to form an approximated positioning; used especially of a dislocated joint (in reference to reduction), a broken bone (in reference to bonesetting), portions of soft tissue (in reference to wound closure or to anastomosis), or heart valve function (wherein good leaflet coaptation is healthy and poor coaptation causes regurgitation/insufficiency).]
(n) :
(obsolete) A courting of favor or applause, by flattery or address; a captivating quality; an attraction
(n) :
Misspelling of coaptation. [The bringing together of two parts to form an approximated positioning; used especially of a dislocated joint (in reference to reduction), a broken bone (in reference to bonesetting), portions of soft tissue (in reference to wound closure or to anastomosis), or heart valve function (wherein good leaflet coaptation is healthy and poor coaptation causes regurgitation/insufficiency).]