deriv SD cv (331) ashtadhyayi.com hei.de L 331 ETT STT a 8.2.62 ALPH OLDHOMEPAGE NEWHOMEPAGE

kvin-pratyayasya kuH

क्विन्प्रत्ययस्य कुः ONPANINI 82062

Replace whatever has /kvin affix with a /ku, (when padafinal).

AFI, **divispRz- दिविस्पृश् is a /kvin-ender, so when we add /su or /bhis, making it padafinal —

**divispRz- दिविस्पृश् + /su → **divispRk दिविस्पृक् "skyscraper"

**divispRz- दिविस्पृश् + /bhis → !**divispRgbhis दिविस्पृग्भिस् "with skyscrapers"

Fine so far, but how do you know if a nounbase is a /kvin-ender or not? I'm not hearing any /kvin affix in spRz- स्पृश्.

Well, the lazy attitude here is reinterpreting this sUtra to mean "whenever we hear divispRk दिविस्पृक् from an authoritative source and we were expecting divispRT दिविस्पृट्, we can infer that a /kvin sneakily attached itself after root spRz स्पृश्". Or simply as "some words turn z श् into k क् when padafinal".

Now the serious answer.

By spRzonudak..., the root spRz स्पृश् when ifc gets /kvin —

spRz स्पृश् root + kvin
→ spRzv- स्पृश्व्
→ spRz- स्पृश् by verapRktasya
→ !**spRz- स्पृश् "toucher", which is a /kvin-ender

That **spRz- स्पृश् nounbase can be used in compounds like —

divi दिवि + **spRz- स्पृश्
→ **divispRz- दिविस्पृश् "skytoucher, skyscraper" (/Gi of divi दिवि kept by tatpuruSek... or ff )

So whenever that spRz- स्पृश् becomes padafinal, it will be replaced with the mostalike /ku, which is kh ख्. This happens for instance in —

**divispRz- दिविस्पृश् mf + /su
→ divispRkh दिविस्पृख् by this rule and sthAnentarat...
→ divispRkg दिविस्पृक्ग् by jhalAJjazonte
→ divispRk दिविस्पृक्, normalizing

→ !**divispRk दिविस्पृक् "skyscraper"

**divispRz- दिविस्पृश् mf + /bhyAm
!**divispRgbhyAm दिविस्पृग्भ्याम् "with two skyscrapers"

Do the old Sanskrit books mention skyscrapers?

They don't, but they mention **divispRk दिविस्पृक्. Whatever appears to touch the sky may, according to the grammar, be so called.