Mid 17th century; earliest use found in Elizabeth Cary (1585–1639), writer and translator. From post-classical Latin praeambulumpreamble + -ary, originally after French préambulaire.
Definition of preambulary in US English:
preambulary
adjective(ˌ)priːˈambjʊləri
Preambular.
Origin
Mid 17th century; earliest use found in Elizabeth Cary (1585–1639), writer and translator. From post-classical Latin praeambulum preamble + -ary, originally after French préambulaire.