What does the word, "holocaust" mean? Is it a Latin or Greek root?

Yiddish and Hebrew

Explanation:

Holocaust, Hebrew Shoʾah ("Catastrophe"), Yiddish and Hebrew Ḥurban ("Destruction"), the systematic state-sponsored killing of six million Jewish men, women, and children and millions of others by NaziGermany and its collaborators during World War II. The Germans called this "the final solution to the Jewish question."

from Old French holocauste, via late Latin from Greek. The mass murder of Jews under the German Nazi regime during the period 1941-45. More than 6 million European Jews, as well as members of other persecuted groups, such as gypsies and homosexuals, were murdered at concentration camps such as Auschwitz.