See the first volume of SK Chatterji's ODBL (The Origin and Development of Bengali Language) for a detailed explanation of all these phonological changes. Although primarily focused on Bengali, the author often discusses other MIA and NIA languages (including Oriya).

Specifically for Oriya, see Paresh Chandra Majumdar, A Historical Phonology of Oṛiyā (Calcutta: Sanskrit College, 1970), basically following ODBL.

The change a>e is mostly caused by vowel harmony.

L.

On 18/06/2024 03:41, Westin Harris via INDOLOGY wrote:
Greetings Indologists,

I am posting for a colleague who is working with a "very bright undergraduate student" on a research paper that falls slightly outside her (and my) areas of expertise. 

Her student is looking for thoughts/sources that discuss the evolution of -akṣ- to -ekh- in certain South Asian vernaculars. Some examples that immediately come to my mind are "Gorekha" (from gorakṣa) and "Alekha" (from alakṣya) in Odia. 

They are also looking for sources discussing how such phonetic changes can impact orthography (like how some phonetic changes come to be reflected in writing, while others are not?) and/or meaning (like how Odia "alekha" takes on the semantic range of both a+√lakṣ and a+√likh?). 

Thank you all.


Sincerely,

Westin Harris
Ph.D. Candidate
Study of Religion 
University of California, Davis
The Robert H. N. Ho Family Foundation Program in Buddhist Studies

Sarva Mangalam.

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