deriv SD cv (365) ashtadhyayi.com hei.de L 365 ETT STT a 6.3.138 ALPH OLDHOMEPAGE NEWHOMEPAGE

cau चौ ONPANINI 63138

Before cu चु.

This means —

(Lengthen the vowel that is) before the /ac''' that lost a अ.

/ac''' shrinks to c च् when it loses the a अ by acaH. In that case it does not get /num.

By this rule, the vowel before such an c च् lengthens —

/prati + /ac''' + /TA
→ /prati + c च् + /TA by acaH
→ pratI प्रती + c च् + /TA by this rule
→ !**pratIcA प्रतीचा "by the western"

/prati + /ac''' + /Am → !**pratIcAm प्रतीचाम् "of westerners"

dadhi- दधिॱ + c च् + /TA → **dadhIcA दधीचा "by /dadhyac- the seer"

/pra + ac अच् + /TA
→ /pra + c च् + /TA by acaH
→ prA प्रा + c च् + /TA by this rule
→ !**prAcA प्राचा "by the eastern dude"

See also viSvagdevay....

How does that cu चु word in the sUtra come to mean /ac'''?

It means "the /aJcu that lost a अ". The root /aJcu when ifc always loses its nasal, that's why I call it /ac'''. /pANini seems to call it /aJcu, /ac''', cu चु, /aJcati in different sUtras.