a definite region or area of the body, especially a group, series, or system of related parts or organs:the digestive tract.
a bundle of nerve fibers having a common origin and destination.
Roman Catholic Church. an anthem consisting of verses of Scripture, sung after the gradual in the Mass from Septuagesima until the day before Easter and on certain other occasions, taking the place of the alleluias and the verse that ordinarily accompany the gradual.
Ornithology. a pteryla.
- track, tract
Other definitions for tract (2 of 2)
a brief treatise or pamphlet for general distribution, usually on a religious or political topic.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use tract in a sentence
Finally, some biologists argue for preserving vast tracts of wilderness not yet altered by human activity.
As soon as it gets turned on by one virus, any other virus that comes along and tries to grow in the respiratory tract can’t.Coronavirus shutdowns have quashed nearly all other common viruses. But scientists say a rebound is coming. | Dan Hurley | January 12, 2021 | Washington Post
It’s just that despite years of research into the use of vitamin D in respiratory tract infections, there still hasn’t really been a clear, slam-dunk answer that there’s benefit.Vitamin D sales are up. But experts still don’t know whether it can prevent or treat covid. | Allyson Chiu | January 11, 2021 | Washington Post
The Nature Conservancy partnered with the American Forest Foundation to create a new offset protocol designed to allow owners of small tracts of wooded land to earn credits for taking steps to suck up and store more carbon.How Amazon’s offsets could exaggerate its progress toward “net zero” emissions | James Temple | November 2, 2020 | MIT Technology Review
In other words, “Knives Out” sought to work as entertainment, not as a social tract or policy prescription.Movies are rushing to impact the election. Don’t ask whether they’ll work. Ask whether they’ll last. | Ann Hornaday | October 30, 2020 | Washington Post
The gastrointestinal (GI) tract performs different digestive functions are various different locations.‘Rectal Feeding’ Has Nothing to Do with Nutrition, Everything to Do with Torture | Russell Saunders | December 10, 2014 | THE DAILY BEAST
On a 2,813-acre tract roughly 30 miles west, Washington found a Calvinist sect called the Seceders squatting on his land.
A procedure to reopen his urinary tract could have been done under local anesthesia.
Please note that I made a contribution after reading the tract, i.e., I too am a hug-a-whale sort of guy.Blame Climate Change for Your Terrible Seasonal Allergies | Kent Sepkowitz | May 14, 2014 | THE DAILY BEAST
For Coming Soon, Gordon's initial plan was to make and then display her wreath paintings in a low-budget California tract house.Kim Gordon: Going Solo After Sonic Youth, and Why She Identifies With ‘Girls’ | Andrew Romano | April 10, 2014 | THE DAILY BEAST
It is often present in the respiratory tract under normal conditions.
Their usual source is the deeper layers of the urinary tract, especially of the bladder.
In suppurations of the urinary tract pus-producing organisms may be found.
Barclay, in his tract on "The Vertues of Tobacco," recommends its use as a medicine.Tobacco; Its History, Varieties, Culture, Manufacture and Commerce | E. R. Billings.
Then I ditch from the lake, and I am the proud owner of a large tract of valuable irrigated land.Ancestors | Gertrude Atherton
British Dictionary definitions for tract (1 of 3)
an extended area, as of land
anatomy a system of organs, glands, or other tissues that has a particular function: the digestive tract
a bundle of nerve fibres having the same function, origin, and termination: the optic tract
archaic an extended period of time
British Dictionary definitions for tract (2 of 3)
a treatise or pamphlet, esp a religious or moralistic one
British Dictionary definitions for tract (3 of 3)
RC Church an anthem in some Masses
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for tract
A series of body organs that work together to perform a specialized function, such as digestion.
A bundle of nerve fibers, especially in the central nervous system, that begin and end in the same place and share a common function.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.