Tract may be a reference to:

• tract (anatomy), a bundle of nerve fibers following a path through the brain, or a collection of related anatomic structures (e.g. gastrointestinal tract, genitourinary tract).
• tract (literature), a short written work, usually of a political or religious nature;
• tract (geography), a section of land;
• Tract (liturgy), component of Roman Catholic liturgy, a dirge used during the season of Lent.

Tractate may be a reference to: In animals the brain, or encephalon (Greek for in the head), is the control center of the central nervous system, responsible for thought. ... The gastrointestinal tract (GI tract), also called the digestive tract, alimentary canal, or gut, is the system of organs within multicellular animals that takes in food, digests it to extract energy and nutrients, and expels the remaining waste. ... In anatomy, the genitourinary system is the organ system of all the reproductive organs and the urinary system. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... The tract (Latin: tractus) is part of the proper of the Roman Mass, which is used instead of the Alleluia during Lenten or pre-Lenten seasons, and a few other penitential occasions, when the joyousness of an Alleluia is deemed inappropriate. ... The Roman Catholic Church, most often spoken of simply as the Catholic Church, is the largest Christian church, with over one billion members. ... A Medieval Low Mass by a bishop. ... Look up Dirge in Wiktionary, the free dictionary. ... In Western Christianity, Lent is the forty-day period (or season) lasting from Ash Wednesday to Easter[1] or Holy Saturday. ...

• A section of the Mishnah and also of the Talmud.

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