1.4.12
दीर्घं च
Definition saṃjñā गुरुसंज्ञा
A दीर्घ स्वर gets the term गुरु.
Word by word (padaccheda)
Term / subject prathamā · ekavacanaIndeclinable च avyaya
- Term / subject Prathamā (1st case): the term being defined, or the subject of the statement.
- Indeclinable An avyaya such as च "and", वा "optionally", न "not".
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Full reading
च
Pāṇini leaves out words that carry over from earlier sūtras. Expand to see the rule as a reader actually understands it.
Commentary
And a long vowel is also called गुरु 'heavy'.
This is clear the anuvritti of the word conjunct is not understood in this sutra. As i of ईहांचक्रे he endeavoured, ईक्षांचक्रे he saw. Here the letter ई is guru, and because of its being called guru, the rule 3.1.36 is applied in forming the perfect tense by the addition of the augment आस्. Thus all long vowels, and short vowels followed by conjunct consonants are guru or heavy. All other short vowels are laghu.
Śrīśa Chandra Vasu, The Ashtadhyayi of Panini (1897), via ashtadhyayi.com.