Meanings
- not comparableConsisting only of digits and lower case consonants except 'l' (letter ell): bcdfghjkmnpqrstvwxz0123456789.
Restricting NAANs to betanumerics (alphanumerics without vowels or 'l') serves two goals.
2023 November 3, J. Kunze, E. Bermès, “The ARK Identifier Scheme”, in IETF2 more examples
While any alphanumeric string can be used for the Assigned Name, the specification recommends using a “betanumeric” [12] character set which removes all vowels and the lowercase l (letter ell) to mitigate ambiguity and help limit transcription errors.
2020 November, Mat Kelly, Jane Greenberg, Christopher B. Rauch, Sam Grabus, Joan P. Boone, John A. Kunze, and Peter Melville Logan, “A Computational Approach to Historical Ontologies”, in Advanced Information AI-CCollaboratoryAn extended digit is constrained to betanumeric characters, which are alphanumerics minus vowels and the letter 'l' (ell).
2024 April 25, Wikipedia contributors, “Check digit”, in English Wikipedia, Wikimedia Foundation
Cite this entry
betanumeric. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/betanumeric
“betanumeric.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/betanumeric. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “betanumeric,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/betanumeric.
Source: betanumeric on Wiktionary, CC BY-SA 4.0.