Definition of subventionary in English:
subventionary
adjective səbˈvɛnʃən(ə)risəbˈvɛnʃ(ə)n(ə)ri
Of the nature of a subvention; of or relating to the granting of subventions.
Origin
Mid 19th century; earliest use found in Thomas Carlyle (1795–1881), author, biographer, and historian. From subvention + -ary.