The four Hebrew letters usually transliterated as YHWH or JHVH, used as a biblical proper name for God.
[Middle English Tetragramaton, from Greek tetragrammaton, four-letter word, from neuter of tetragrammatos, four-lettered : tetra-, tetra- + gramma, grammat-, letter; see gerbh- in the Appendix of Indo-European roots.]
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