The Collaborative International Dictionary
Hyperdulia
Hyperdulia \Hy`per*du*li"a\, n. [Pref. hyper- + dulia: cf. F.
hyperdulie.] (R. C. Ch.)
Veneration or worship given to the Virgin Mary as the most
exalted of mere creatures; higher veneration than dulia.
--Addis & Arnold.
Wiktionary
hyperdulia
n. (context Roman Catholicism English) A level of veneration higher than dulia but less than latria, properly given to the Virgin Mary.