Where does “יומא” come from?

יומא (Lishana Deni) comes from Aramaic יוֹמָא, from Aramaic יַוְמָא, from Proto-Semitic yawm-, from Proto-Afroasiatic yam- — day.

יומא (Lishana Deni): day

Definitions

Step	Language	Word	Meaning
1	Aramaic	יוֹמָא	—
2	Aramaic	יַוְמָא	—
3	Proto-Semitic	yawm-	day
4	Proto-Afroasiatic	yam-	day

יומא — Etymology, Origin & Word History | Etymology Explorer