requisitive
/rɪˈkwɪzɪtɪv/adjective
That expresses a request, specifically designating the grammatical mood that expresses a request or demand.
noun
Chiefly with the: the grammatical mood that expresses a request or demand.
Origin
Mid 18th century; earliest use found in Joseph Harris (1704–1764), astronomer and assayer. From classical Latin requīsīt-, past participial stem of requīrere require + -ive.