deriv LSK ETT STT aSTA ALPH OLDHOMEPAGE NEWHOMEPAGE

/TA / टा

/TA is the singular ending in /TAbhyAmbhis, the third line in svaujasamauTch.... So it means "with", "by" —

**vidyut- विद्युत् + /TA → **vidyutA विद्युता "with lightning"

**rAma- रामॱ + /TA → **rAmeNa रामेण "by rAma राम"

/TA is called /AG' in a few sUtras.

Why does /TA have /Tit?

I guess it's just to tell it apart from /Ap, /AG, /AT, At आत् and other kinds of A आ.

What is At आत्?

At आत् can be the replacement of /Gasi made by TAGasiGas..., or the At आत् meaning "after a अ / A आ" that you find in AdguNaH, or, according to taparastatk..., just any A आ.