PosekIn Jewish law, a posek (פוסק poˈsek, pl. poskim, posˈkim) is a legal scholar who determines the application of halakha, the Jewish religious laws derived from the written and Oral Torah in cases of Jewish law where previous authorities are inconclusive, or in those situations where no clear halakhic precedent exists. The decision of a posek is known as a psak halakha ("ruling of law"; pl. piskei halakha) or simply a "psak". Piskei halakha are generally recorded in the responsa literature.
ToseftaThe Tosefta (תוספתא "supplement, addition") is a compilation of Jewish Oral Law from the late second century, the period of the Mishnah and the Jewish sages known as the Tannaim. In many ways, the Tosefta acts as a supplement (toseftā) to the Mishnah. The Mishnah (משנה) is the basic compilation of the Oral law of Judaism; according to the tradition, it was compiled in 189 CE. The Tosefta closely corresponds to the Mishnah, with the same divisions for sedarim ("orders") and masekhtot ("tractates").
RishonimRishonim (ʁiʃoˈnim; ; sing. ראשון, Rishon) were the leading rabbis and poskim who lived approximately during the 11th to 15th centuries, in the era before the writing of the Shulchan Aruch (שׁוּלחָן עָרוּך, "Set Table", a common printed code of Jewish law, 1563 CE) and following the Geonim (589–1038 CE). Rabbinic scholars subsequent to the Shulchan Aruch are generally known as acharonim ("the latter ones"). The distinction between the and the is meaningful historically; in halakha (Jewish law) the distinction is less important.
BaraitaBaraita (בָּרַיְתָא "external" or "outside"; pl. bārayāṯā or in Hebrew baraitot; also baraitha, beraita; Ashkenazi pronunciation: berayse) designates a tradition in the Oral Torah of Rabbinical Judaism that is not incorporated in the Mishnah. Baraita thus refers to teachings "outside" of the six orders of the Mishnah. Originally, "Baraita" probably referred to teachings from schools outside the main Mishnaic-era yeshivas – although in later collections, individual barayata are often authored by sages of the Mishna (Tannaim).
Rosh yeshivaRosh yeshiva (ראש ישיבה, pl. ראשי ישיבה, ; Anglicized pl. rosh yeshivas) is the title given to the dean of a yeshiva, a Jewish educational institution that focuses on the study of traditional religious texts, primarily the Talmud and the Torah, and halakha (Jewish law). The general role of the rosh yeshiva is to oversee the Talmudic studies and practical matters. The rosh yeshiva will often give the highest shiur (class) and is also the one to decide whether to grant permission for students to undertake classes for rabbinical ordination, known as semicha.
AcharonimIn Jewish law and history, Acharonim ((ʔ)aχ(a)ʁoˈnim; אחרונים Aḥaronim; sing. , Aḥaron; lit. "last ones") are the leading rabbis and poskim (Jewish legal decisors) living from roughly the 16th century to the present, and more specifically since the writing of the Shulchan Aruch (Hebrew: , "Set Table", a code of Jewish law) in 1563 CE. The Acharonim follow the Rishonim, the "first ones"—the rabbinic scholars between the 11th and the 16th century following the Geonim and preceding the Shulchan Aruch.
ResponsaResponsa (plural of Latin responsum, 'answer') comprise a body of written decisions and rulings given by legal scholars in response to questions addressed to them. In the modern era, the term is used to describe decisions and rulings made by scholars in historic religious law. Roman law recognised responsa prudentium, i.e., the responses and thoughts of jurists, as one of the sources of ius scriptum (written law), along with laws originating from magistrates, from the Senate, or from the emperor.
SoferA sofer, sopher, sofer SeTaM, or sofer ST"M (סופר סת״ם, "scribe"; plural of is , סופרים) is a Jewish scribe who can transcribe Sifrei Kodesh (holy scrolls), tefillin (phylacteries), mezuzot (ST"M, סת״ם, is an abbreviation of these three terms) and other religious writings. By simple definition, soferim are copyists, but their religious role in Judaism is much more.
KodashimKodashim (קדשים, "Holy Things") is the fifth of the six orders, or major divisions, of the Mishnah, Tosefta and the Talmud, and deals largely with the services within the Temple in Jerusalem, its maintenance and design, the korbanot, or sacrificial offerings that were offered there, and other subjects related to these topics, as well as, notably, the topic of kosher slaughter of animals for non-sacrificial purposes.
