4.2.78
रोणी
Operational rule vidhi
In the context of चतुरर्थाः, the words ending in 'रोणी' get the 'अण्' प्रत्यय.
Word by word (padaccheda)
Substitute / term रोणी prathamā · ekavacana
- Substitute / term Prathamā (1st case): in operational rules, the substitute or the thing introduced; in definitions, the term or its referent.
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Full reading
रोणी
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
The affix अण् comes after राणो in the 4-fold sense.
This debars अञ् of 4.2.74. This sutra consists of one word रोणी in the nominative case. As a general rule all words to which affixes are to be added are put in the ablative case in these sutras. The fact of this exceptional treatment of the word रोणी indicates that this word takes अण् under all circumstances, whether alone, or forming part of a compound. In fact, the nominative case in this sutra is a very ingenious explanatory artificiality. Thus रौणः, आजकरौणः or सैहिकरौणः
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.