Meaning

• An area or expanse.

  "an unexplored tract of sea"

• A series of connected body organs, as in the digestive tract.

• A small booklet such as a pamphlet, often for promotional or informational uses.

• A brief treatise or discourse on a subject.

• A commentator's view or perspective on a subject.

• Continued or protracted duration, length, extent

• Part of the proper of the liturgical celebration of the Eucharist for many Christian denominations, used instead of the alleluia during Lenten or pre-Lenten seasons, in a Requiem Mass, and on a few other penitential occasions.

• Continuity or extension of anything.

  "the tract of speech"

• Traits; features; lineaments.

• The footprint of a wild animal.

• Track; trace.

• Treatment; exposition.