A name for the Old Testament God as transliterated from the Hebrew YHVH

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
IHVH \IHVH\ [Written also JHVH , YHVH .] A transliteration of the four constants forming the Hebrew tetragrammaton or ``incommunicable name'' of the Supreme Being, which in latter Jewish tradition is not pronounced save with the vowels of adonai ...