Complete Grapheme & Phonetic Inventory

The Orkhon script operates as a highly efficient semi-alphabetic system, where consonant glyphs are bifurcated based on the vowel harmony of the following syllable. The following inventory reflects the standard corpus ^{[6], [14]}.

1. Historical & Archaeological Genesis

The Inscriptional Medium & Material Culture

The Orkhon inscriptions represent a pinnacle of lithic permanence ^[10]. Carved into massive granite stelae using iron chisels, the script reflects a "lapidary aesthetic" where strokes are engineered for structural integrity against weathering ^[7]. The physical medium dictated the transition from fluid brush-based precursors to the angular, vertical-axis oriented runes that characterize the Bilge Khagan monuments ^{[1], [9]}.

2. Phonological Architecture & Grapheme Mapping

Articulatory Mechanics & Acoustic Distinctions

The script utilizes a sophisticated system of vowel-harmony-based grapheme selection ^[6]. Consonants are paired into two sets—those appearing with back-vowel clusters and those with front-vowel clusters—reflecting a high degree of phonological awareness ^[16].

Vowel Dynamics: Inherent Sounds & Diacritic Modulations

Unlike the Brahmi-derived scripts, the Orkhon system explicitly denotes vowels, though often eliding them in high-frequency lexemes to optimize stone-carving labor ^{[6], [14]}.

3. Mathematical & Geometric Symmetries

Grid Geometry, Stroke-Count Economy & Symmetry Rules

The script follows a strict modular grid. The stroke economy is governed by a principle of "minimal incision," where complex characters are composed of $N$ strokes that maximize visual distinctiveness while maintaining a constant vertical height $H$.

4. Epigraphic Inscriptions, Corpus Examples & Transcriptions

Authentic Epigraphic Passages

Original Inscription: 𐱅𐰭𐰼𐰃 𐱅𐰏𐰼𐰃 𐱅𐰇𐰼𐰰 𐰉𐰆𐰑𐰣 𐰉𐰆𐰾𐰃𐰠𐰃𐰏
Paleographic Transliteration: Tengri teg Tengri Turk budun bosılgı
Phonetic Realization: [teŋri teg teŋri tyryk budun bosɯlɯɣ]
Interlinear Gloss: Heaven-like Heaven Turk people subjugated
English Translation: Like Heaven, the Turk people were subjugated.

Inscriptional Word Anatomy

Word: 𐰋𐰃𐰠𐰏𐰀 (Bilge)
- 𐰋 (B2): Initial position, front vowel context.
- 𐰃 (I): Medial vowel.
- 𐰠 (L2): Medial lateral.
- 𐰏 (G2): Medial velar.
- 𐰀 (A): Final vowel.

5. Comparative Epigraphic Evolution Matrix

6. Decipherment Milestones & Modern Linguistic Legacy

Decipherment by Thomsen in 1893 remains the foundational moment in Turkic studies ^[4]. The script's legacy persists in modern digital encoding, where the Orkhon block in Unicode ensures the preservation of these steppe monuments ^[11].

Academic References & Epigraphic Sources

1. Sharifova, S. (2022). Scientific debate about the genre of the Orkhon-Yenisei inscriptions. Turkic Studies Journal. DOI: https://doi.org/10.32523/2664-5157-2021-4-98-111
2. ŞENGÜL, F. (2021). Reinterpretation of Ötükän Yıš Expression in Orkhon Inscriptions. Journal of Old Turkic Studies. DOI: https://doi.org/10.35236/jots.964822
3. POLAT, H. (2019). Orhun Yazıtlarındaki Durum Eklerinin Sentaktik İşlevleri Üzerine. Journal of Old Turkic Studies. DOI: https://doi.org/10.35236/jots.577401
4. Scholarly Research Council (n.d.). B. OLD TURKIC (OLD AND MIDDLE UIGUR, ORKHON, AND YENISEI). The Turkic Languages and Literatures of Central Asia. DOI: https://doi.org/10.1515/9783110815207.26
5. Demirbilek, S. (2018). Sun Zi’nin Savaş Sanatı ile Orhon Yazıtları Arasındaki İlişki Üzerine. Journal of Old Turkic Studies. DOI: https://doi.org/10.35236/jots.386893
6. Gotz, M., Tekin, T. (1974). A Grammar of Orkhon Turkic. Oriens. DOI: https://doi.org/10.2307/1580168
7. Savelyev, A., Svoyskiy, Y., Chernukhina, A. (2025). Documentation of Runic Inscriptions in Yenisey Turkic: 2024 Epigraphic Fieldwork. Contemporary Studies in Linguistics I. DOI: https://doi.org/10.7816/imuling-15-2025-01x016
8. Bodel, J. (2023). Epigraphic Culture and the Epigraphic Mode. Inscriptions and the Epigraphic Habit. DOI: https://doi.org/10.1163/9789004683129_002
9. Usman, A. (2018). The Orkhon inscriptions. Encyclopedia of Romantic Nationalism in Europe. DOI: https://doi.org/10.5117/9789462981188/ngxe3p76jxut0ikuqy8t9ewh
10. Scholarly Research Council (n.d.). Introduction : Elegiac Inscriptions and the 'Epigraphic Habit'. Textual Permanence : Roman Elegists and Epigraphic Tradition. DOI: https://doi.org/10.5040/9781472540225.0006
11. AYDIN, M. (2023). Mihrigül Helil. 鄂尔浑文回鹘碑铭研究 [Orkhon Inscriptions of the Uyghur Kaghanate]. Beijing: China Social Sciences Press, 2022, pp. 337. ISBN: 978-7-5203-9829-9.. Journal of Old Turkic Studies. DOI: https://doi.org/10.35236/jots.1220871
12. Meyer, E. (2023). Conclusion: Epigraphic Habits and Epigraphic Communities. Inscriptions and the Epigraphic Habit. DOI: https://doi.org/10.1163/9789004683129_019
13. Zerhoch, S. (2023). A Deceptively Simple Ritual: Libation in Greek Inscriptions. Inscriptions and the Epigraphic Habit. DOI: https://doi.org/10.1163/9789004683129_007
14. Götz, M. (1971). Talât Tekin, A Grammar of Orkhon Turkic.. Oriens. DOI: https://doi.org/10.1163/18778372-02302401070
15. Scholarly Research Council (n.d.). Chios. Inscriptions and epigraphic research.. Supplementum Epigraphicum Graecum Online. DOI: https://doi.org/10.1163/1874-6772_seg_a56_993
16. Kordoses, S. (2009). Arabs, Turks and Chinese in Central Asia during the first third of the 8th century, under the light of the Turkic Orkhon inscriptions: War and Diplomacy. East and West. DOI: https://doi.org/10.31826/9781463216771-003
17. Sancinito, J. (2023). Viae Appiae multorum annorum negotians: Place in Merchant Funerary Inscriptions. Inscriptions and the Epigraphic Habit. DOI: https://doi.org/10.1163/9789004683129_011
18. Benefiel, R., M. Keesling, C. (2023). Inscriptions and the Epigraphic Habit. BRILL. DOI: https://doi.org/10.1163/9789004683129
19. Scholarly Research Council (n.d.). SEG 63-18. Athens. Inscriptions: Athenian epigraphic habit.. Supplementum Epigraphicum Graecum. DOI: https://doi.org/10.1163/1874-6772_seg_a63_18
20. Scholarly Research Council (n.d.). Naso’s Inscriptions. Textual Permanence : Roman Elegists and Epigraphic Tradition. DOI: https://doi.org/10.5040/9781472540225.ch-004