E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
An inferior degree of worship or veneration, such as that paid by
Roman Catholics to saints and angels; Hyper-dulia is a superior sort of veneration reserved for the Virgin; but that worship which is paid to God alone is called latria. Dulia means that sort of veneration which slaves pay to their lords (Greek, doulos, a slave); Latria means that sort of veneration which mortals pay to the gods (Greek, latreuo, to worship the gods).