[Judaic] Hebrew word meaning "my lord, my master", from adon, "lord, master". From Hellenistic times onward it was used verbally to replace the written Yahweh. When the tetragrammaton (JHWH) appears in the Biblical text, it is usual to read it out load either as Adonai or as Ha-Shem ("The Name").
ADONAI
Meaning of ADONAI in English
Encyclopedia Mythica English dictionary. Английский энциклопедический словарь греческой мифологии. 2012