Odia (ଓଡ଼ିଆ, ISO 639-1: or) is the official language of Odisha, India, spoken by approximately 42 million people [1]. It uses the Odia script — a unique Brahmic abugida recognisable by its characteristic rounded arching curves at the top of each letter, developed from centuries of writing on palm leaves with a stylus.
Odia is the 6th classical language of India (recognised 2014) with a literary tradition spanning over 1,000 years [4]. It is one of the 22 scheduled languages of the Indian Constitution. The Odia script has 12 independent vowels and 36 consonants including the unique retroflex flaps ଡ଼ and ଢ଼ that appear in the name of the language itself — Odia (ଓଡ଼ିଆ) [3].
Odia has 12 independent vowels in the Odia script — used when a vowel begins a syllable without a preceding consonant. The vowel inventory includes short/long pairs for a, i, u; the diphthongs e, ai, o, au; the vocalic R (ଋ); and the rare vocalic L (ଌ) found in Sanskrit-derived words.
Each vowel has a characteristic rounded arch (shirorekha) at the top — the distinctive feature of the Odia script that gives it its recognisable circular letterform, unique among all Brahmic scripts of South Asia.
Odia has 36 consonants in the standard Brahmic arrangement. The Odia script is unique in having two retroflex flap consonants — ଡ଼ (rra) and ଢ଼ (rha) — formed with a nukta diacritic under ଡ and ଢ. These appear in the very name of the language: ଓଡ଼ିଆ (Odia).
Also distinctive is the letter ଳ (lla) — a retroflex lateral unique to the Odia script among major Brahmic writing systems. All Odia consonants feature the characteristic curved or rounded letterforms that identify the script.
Dependent vowels (matras) are diacritical marks written around Odia consonants to indicate vowels other than the inherent a. A distinctive feature of the Odia script is that the e matra (େ) and ai matra (ୈ) are placed to the left of the consonant — unlike most Brahmic scripts where they appear to the right.
Odia also has two-part vowel signs for o (ୋ) and au (ୌ) — signs that surround the consonant on both sides, requiring special rendering in digital typography. The hasanta (୍) suppresses the inherent vowel for consonant cluster formation.
Odia uses its own unique set of Odia digits (୦–୯) — distinct from Devanagari, Bengali, and all other Brahmic numeral systems. These correspond to the Western Arabic numerals 0–9 and are the traditional numerals of Odisha, still widely used in official Odia documents, books, and signage.
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