Definition of tetragram in English:
 tetragram
noun ˈtɛtrəɡramˈtɛtrəˌɡræm
A word consisting of four letters or characters.
 Example sentencesExamples
-  But around 300 BC, still worried about taking God's name in vain, they began even substituting these tetragrams with the word, Adhonai, which simply means Lord.
 -  Yes, the latest issue of WordWays, the oddest journal on the planet, announces that computer-aided searches of the OED have found 523 of the 625 vowel tetragrams.
 
  Definition of tetragram in US English:
 tetragram
nounˈtetrəˌɡramˈtɛtrəˌɡræm
A word consisting of four letters or characters.
 Example sentencesExamples
-  Yes, the latest issue of WordWays, the oddest journal on the planet, announces that computer-aided searches of the OED have found 523 of the 625 vowel tetragrams.
 -  But around 300 BC, still worried about taking God's name in vain, they began even substituting these tetragrams with the word, Adhonai, which simply means Lord.