tract

tract — noun

1. a short printed piece of writing, usually about religion or politics, that is de

1.nounB2
Definition

a short printed piece of writing, usually about religion or politics, that is designed to persuade readers to adopt a particular view.

Example

Outside the train station, a woman handed Zuri a tract about protecting the environment.

tract + about + topic

The librarian discovered a 19th-century religious tract hidden inside an old Bible.

religious tract — common modifier

Common collocations
  • political tract
  • religious tract
  • propaganda tract
  • tract on
  • tract about
Synonyms
  • pamphlet

    more general term for any unbound printed booklet, not necessarily persuasive

  • leaflet

    a single sheet of paper, often folded; shorter than a tract

  • brochure

    usually describes or advertises a product or service rather than persuading about beliefs

Grammar Patterns

tract + about/on + topic

Usage Note

Frequently followed by 'on' or 'about' to specify the subject. Usually printed as a thin pamphlet or leaflet, not a book.

Common Mistakes

I read a long tract about history
I read a tract about local politics.
'tract' implies a short persuasive piece, not a long scholarly work.

2. a wide stretch of land that is not precisely measured or bounded, often used to

2.nounB2
Definition

a wide stretch of land that is not precisely measured or bounded, often used to describe natural landscapes.

Example

Their car crossed a dusty tract of desert with no buildings in sight.

tract of desert — describing natural landscape

Great tracts of forest in the north remain untouched by roads or housing developments.

tracts of forest — plural for vast expanses

Common collocations
  • vast tract
  • wide tract
  • immense tract
  • tract of land
  • tract of forest
  • tract of desert
Synonyms
  • expanse

    emphasises the flat, open quality of the area more than 'tract' does

  • stretch

    more informal and often used for a continuous length of road, river, or coast

  • territory

    suggests an area with political or ownership boundaries

Antonyms

Grammar Patterns

tract + of + (adjective) + land/forest/desert

Usage Note

Often used in the plural ('tracts of…') when describing very large or multiple areas. The focus is on vastness rather than precise boundaries.

Common Mistakes

We bought a tract of land in the city centre.
We bought a tract of farmland in the countryside.
'tract' emphasises size and wildness; for a small city lot use 'plot' or 'parcel'.

3. a precisely measured piece of land that has been set aside or officially approve

3.nounB2
Definition

a precisely measured piece of land that has been set aside or officially approved for a particular use — for example, putting up homes, growing crops, or drilling for oil.

Example

The city council approved a five-hectare tract for the construction of a new primary school.

tract + for + purpose — designated use

An energy company is exploring a tract of land in the south for natural gas.

Common collocations
  • housing tract
  • oil tract
  • mining tract
  • building tract
  • tract of land
Synonyms
  • plot

    a measured piece of land, usually smaller and more precisely defined than a tract

  • parcel

    a piece of land that is part of a larger property; common in legal contexts

  • lot

    a specific area of land in a town or city, often for building

Grammar Patterns

tract + of + land + for + purpose

Usage Note

Distinguish from sense 2: this sense refers to a surveyed or officially designated area with a defined boundary, not an indefinite stretch. Common in real estate, urban planning, and resource extraction contexts.

Common Mistakes

The farmer bought a tract of land to build one small shed.
The farmer bought a tract of land to expand his orchard.
'tract' implies a significant area; for a tiny plot, use 'plot' or 'lot'.

4. a connected series of tubes and organs in humans and animals that work together

4.nounB2
Definition

a connected series of tubes and organs in humans and animals that work together to carry out a key process, such as digesting food or breathing.

Example

The doctor explained that food passes through the digestive tract from the mouth to the intestines.

the digestive tract — most common collocation

Smoking can seriously damage the entire respiratory tract, including the lungs.

the respiratory tract — compound noun pattern

Common collocations
  • digestive tract
  • respiratory tract
  • urinary tract
  • gastrointestinal tract
  • upper respiratory tract
  • lower respiratory tract
  • intestinal tract
Synonyms
  • system

    broader term that includes the tract plus associated organs and glands (e.g. digestive system includes the tract plus the liver and pancreas)

  • passage

    a more general word for any channel or way through; less precise than 'tract'

  • canal

    a narrow tube or passage in the body, such as the ear canal; more specific than 'tract'

Grammar Patterns

the + adjective + tract

digestive / respiratory / urinary / gastrointestinal + tract

Usage Note

Almost always appears with an anatomical modifier: 'digestive tract', 'respiratory tract', 'urinary tract', 'gastrointestinal tract'. Rarely used alone without a modifier.

Common Mistakes

The food goes through my tract.
The food goes through my digestive tract.
'tract' alone sounds unnatural; always specify which tract.

5. a collection of nerve fibres running together through the brain or spinal cord,

5.nounC1
Definition

a collection of nerve fibres running together through the brain or spinal cord, all sharing the same origin, destination, and function of carrying particular signals within the nervous system.

Example

Damage to a nerve tract in the spinal cord can affect feeling in the legs.

nerve tract in the spinal cord — neuroanatomy context

Dr. Okafor traced signals along the optic tract from the eyes to the brain.

Common collocations
  • nerve tract
  • optic tract
  • spinal tract
  • corticospinal tract
  • fiber tract
  • neural tract
Synonyms
  • pathway

    a broader, less formal term for a route taken by nerve signals; can refer to functional rather than anatomical connections

  • bundle

    a general descriptive term; less precise than 'tract' in anatomical writing

  • fasciculus

    the formal anatomical term for a small bundle of nerve fibres

Grammar Patterns

the + (adjective) + tract

nerve tract

optic tract

spinal tract

Usage Note

Highly specialized term used in neurology and medical education. The modifier (e.g. 'optic', 'corticospinal', 'spinothalamic') names the origin and destination. Learners at CEFR C1 and above may encounter this in academic reading.

Common Mistakes

The nerve tract carries blood.
The nerve tract carries electrical signals.
nerve tracts carry neural impulses, not blood; blood travels through blood vessels.

Word family

Synonym discussion

Sense: noun/4

All four words describe connected structures in the body, but they differ in scope and specificity. 'Tract' refers specifically to a continuous series of tubes and organs working together for one process, such as the digestive tract (mouth to intestines) or respiratory tract (nose to lungs). 'System' is broader: the digestive system includes the tract plus accessory organs like the liver and pancreas. 'Passage' is a more general, everyday term for any opening or channel (nasal passage, ear passage), while 'canal' usually refers to a narrow, tube-shaped passage for fluid (ear canal, birth canal). For example, you can say 'the food moves through the digestive tract' or 'the digestive system includes the stomach and liver,' but you would say 'wax builds up in the ear canal,' not 'ear tract.'

tract ↗system ↗passage ↗canal ↗

Common collocations

Nouns

Phrases

  • tract of land
  • tract of forest
  • tract of desert

Prepositions

Etymology

LatinFrenchEnglish

From Latin 'tractus', meaning 'a dragging, a drawing out; a stretch of space or time'. This comes from 'trahere' (to pull, draw). The word entered English through French in the 1400s. The 'stretch' idea gave rise to both the land senses (a stretch of ground) and the writing sense (a drawn-out discussion or treatise). The anatomical meaning (body system, nerve bundle) follows the notion of a continuous stretch or pathway through the body.