Where does “Panathenaic” come from?

Panathenaic (English) comes from Ancient Greek Παναθηναϊκός, from Ancient Greek Παναθήναια, from Ancient Greek πᾰν-, from Ancient Greek πᾶς, from Proto-Hellenic *pánts.

Panathenaic (English): Of or relating to the Panathenaea

Definitions

Of or relating to the Panathenaea

Ancestry of “Panathenaic”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Παναθηναϊκός	Panathenaic
2	Ancient Greek	Παναθήναια	the Panathenaea
3	Ancient Greek	πᾰν-	every; all, every
4	Ancient Greek	πᾶς	all, every, each; whole
5	Proto-Hellenic	*pánts	—

Every word from Proto-Hellenic *pánts →Every word from Ancient Greek πᾶς →Every word from Ancient Greek πᾰν- →