From ܛܲܟ݂ܣܵܐ (ṭaḵsā, “system”) + -ܢܝܐ (-ānāyā, the intensive attributive adjective ending).
ܛܲܟ݂ܣܵܢܵܝܵܐ • (ṭaḵsānāyā) (feminine ܛܲܟ݂ܣܵܢܵܝܬܵܐ (ṭaḵsānāytā), plural ܛܲܟ݂ܣܵܢܵܝܹ̈ܐ (ṭaḵsānāyē))