The word worship (Saxon weorthscipe, "honour"; from worth, meaning "value", "dignity", "price", and the termination, ship; Lat. cultus) in its most general sense is homage paid to a person or a thing. In this sense we may speak of hero-worship, worship of the emperor, of demons, of the angels, even of relics, and especially of the Cross. This article will deal with Christian worship according to the following definition: homage paid to God, to Jesus Christ, to His saints, to the beings or even to the objects which have a special relation to God.
There are several degrees of this worship:
if it is addressed directly to God, it is superior, absolute, supreme worship, or worship of adoration, or, according to the consecrated theological term, a worship of latria. This sovereign worship is due to God alone; addressed to a creature it would become idolatry.
When worship is addressed only indirectly to God, that is, when its object is the veneration of martyrs, of angels, or of saints, it is a subordinate worship dependent on the first, and relative, in so far as it honours the creatures of God for their peculiar relations with Him; it is designated by theologians as the worship of dulia, a term denoting servitude, and implying, when used to signify our worship of distinguished servants of God, that their service to Him is their title to our veneration (cf. Chollet, loc. cit., col. 2407, and Bouquillon, Tractatus de virtute religionis, I, Bruges, 1880, 22 sq.).
As the Blessed Virgin has a separate and absolutely supereminent rank among the saints, the worship paid to her is called hyperdulia (for the meaning and history of these terms see Suicer, Thesaurus ecclesiasticus, 1728).