From the active participle of ܡܲܪܓܸܫ (margiš, “to make feel”) + -ܢܐ (-ānā, the adjectival ending).
ܡܲܪܓܫܵܢܵܐ • (margšānā) (feminine ܡܲܪܓܫܵܢܝܼܬ݂ܵܐ (margšānīṯā), plural ܡܲܪ̈ܓܫܵܢܹܐ (margšānē))