Seder Olama timeline of Jewish history

Glossary

Words this reference keeps in Hebrew, because translating them would lose what they mean.

Tanna (pl. Tannaim)
A sage of the Mishnah, from Hillel to Rabbi Yehuda haNasi (c. 3700–3978 AM). Their teaching is the Mishnah itself.
Amora (pl. Amoraim)
A sage of the Talmud, after the Mishnah was sealed and until the Talmud was closed (c. 3979–4260 AM).
Savora (pl. Savoraim)
A sage of the generations just after the Talmud, who did not add to it but settled its wording (c. 4260–4349 AM).
Gaon (pl. Geonim)
Head of the Babylonian academies of Sura and Pumbedita, whose answers were binding across the dispersion (c. 4349–4798 AM).
Rishon (pl. Rishonim)
“The first ones”: the authorities from the close of the geonic age to the expulsion from Spain (c. 4799–5250 AM).
Acharon (pl. Acharonim)
“The later ones”: authorities from the sixteenth century to our own day.
Nasi
The Patriarch — head of the Jews of the Land of Israel, recognised by Rome; the office descended from Hillel and ended about 4185 AM.
Resh Galuta
Head of the Exile — the temporal head of Babylonian Jewry, tracing his house to David.
Semichah
Ordination passed hand to hand from Moses onward; it required the Land of Israel and lapsed around 4120–4185 AM.
Halakhah
Jewish law — what one is required to do. From a root meaning “to walk”: the way one goes.
Aggadah
Everything in rabbinic literature that is not law: story, parable, history, ethics, theology.
Mishnah
The six orders of Oral Torah set down by Rabbi Yehuda haNasi about 3948 AM — the foundation of the Talmud.
Gemara
The discussion of the Mishnah in the academies; Mishnah and Gemara together are the Talmud.
Baraita
A tannaitic teaching left outside the Mishnah but cited in the Talmud as authoritative.
Tosefta
A companion compilation to the Mishnah, following its order and adding to it.
Midrash
Interpretation that draws law or story out of the words of Scripture.
Responsum (she’elah u-teshuvah)
A written question of law sent to an authority, and his written answer. The chief legal literature of the exile.
Beit din
A rabbinical court, of three judges or more.
Sanhedrin
The high court of seventy-one in Jerusalem; it fixed the calendar and judged the gravest matters.
Yeshiva
A house of Torah study; in Babylonia, an academy under a Gaon.
Kollel
A yeshiva for married men, supported so that they may study for years. As an ordinary stage of life it is an American innovation of Rabbi Aharon Kotler (5703 AM).
Anusim
Jews forced to convert, who kept their Judaism in secret. The Hebrew term is preferred here to “Marranos”, which began as an insult.
Dhimmi
The protected status of Jews and Christians under Muslim rule: faith, courts and property kept, in exchange for a poll tax and a second rank.
Geniza
A store for worn-out sacred writings, which may not be destroyed. The Cairo Geniza preserved a thousand years of documents.
Masorah
The apparatus that fixes the text of the Bible: vowels, cantillation and counts of every letter, completed at Tiberias about 4690 AM.
Piyyut
Liturgical poetry, inserted into the fixed prayers on festivals.
Halukah
Support sent from the diaspora to the scholars of the Land of Israel.
Yahrzeit
The anniversary of a death by the Hebrew calendar.
AM (Anno Mundi)
Year from the Creation of the world by the count of Seder Olam Rabbah. AM = CE + 3760.
Seder Olam Rabbah
The second-century chronology of Rabbi Yose ben Halafta, on whose count every date in this reference rests.