|plural of majesty|
|Definition - A plural noun that is used as the name of a single entity.|
Example - In Hebrew the word elohim means "gods," but Elohim is also the name for the one God.
Oxford English Dictionary - The term's first citation is from circa 1860:
"The plural of majesty, elohim; [sic] occurs more than two thousand times."
(Gesenius's, Hebrew & Chaldee Lexicon, 30/2)