1. corticospinal tract

noun. Any of the important motor nerves on each side of the central nervous system that run from the sensorimotor areas of the cortex through the brainstem to motor neurons of the cranial nerve nuclei and the ventral root of the spinal cord.
Synonyms
motor nerve basal ganglion central nervous system CNS efferent pyramidal tract pyramidal motor system systema nervosum centrale efferent nerve
Antonyms
afferent

2. tract

noun. (ˈtrækt) An extended area of land.
Synonyms
right field geographical region field of fire rightfield field geographic region battlefield subdivision lot field of honor minefield geographic area diamond playing area parcel of land mine field parade ground parkland common range playing field railyard land site center field industrial park left geographical area left field commons green plot of land patch right baseball diamond clearing grassland oasis glade battleground field of battle park mud flat fairground public square sector infield plot midway fairway plot of ground terrain piece of ground parcel piece of land center picnic area desert grounds breeding ground leftfield outfield picnic ground railway yard athletic field toll plaza short yard site centerfield square
Antonyms
infield outfield unusual separate individual
Etymology
tract (English)
tractus (Latin)

3. tract

noun. (ˈtrækt) A system of body parts that together serve some particular purpose.
Synonyms
airway system respiratory tract urinary tract
Antonyms
misfortune bad luck take unite trapezium
Etymology
tract (English)
tractus (Latin)

4. tract

noun. (ˈtrækt) A brief treatise on a subject of interest; published in the form of a booklet.
Synonyms
pamphlet treatise
Antonyms
uncommon extraordinary uncommonness
Etymology
tract (English)
tractus (Latin)

5. tract

noun. (ˈtrækt) A bundle of myelinated nerve fibers following a path through the brain.
Synonyms
white matter pathway radiatio optica cerebral peduncle commissure peduncle nerve tract substantia alba optic radiation nerve pathway
Antonyms
urban area rural area good luck good fortune success
Etymology
tract (English)
tractus (Latin)
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