One of the mysteries of the English language finally explained.
1A large membranous tube reinforced by rings of cartilage, extending from the larynx to the bronchial tubes and conveying air to and from the lungs; the windpipe.
- ‘Minor salivary glands of mucinous type are also located in the nose, paranasal sinuses, the larynx, trachea and bronchi.’
- ‘Additionally, the bronchi, trachea, and larynx demonstrated generalized erythema of the mucosa with overlying thin yellow mucus.’
- ‘The conducting portion of the respiratory system includes the nasal cavity, paranasal sinuses, nasopharynx, larynx, trachea, and bronchi.’
- ‘If symptoms aren't improving in that time, see your doctor to make sure you don't have a bacterial infection in your lungs, larynx, trachea, sinuses or ears.’
- ‘The larynx, trachea, and bronchi exhibited extensive squamous metaplasia of the mucosa with reactive atypia.’
- 1.1Entomology Each of a number of fine chitinous tubes in the body of an insect, conveying air direct to the tissues.
- ‘Although tracheae appear to be compressed synchronously, the shape and direction of compression varies within local tracheal segments, and to a lesser extent, between beetles.’
- ‘This was a pretty far out idea, since blood-based gas exchange is what other arthropods use (including aquatic ones) but was previously thought to be completely absent in insects, which deliver air directly to their tissues via tracheae.’
- ‘Nor would they be able to gasp enough oxygen through their tracheae, the breathing system that limits most insects to the half-inch scale.’
- ‘Breathing is by special gas exchange organs along the side of the body called tracheae and malpighian tubules.’
- ‘The lethal phase of Tpl aneuploids is late embryonic or early larval, with the tracheae and the gut the first tissues to be affected.’
- 1.2Botany A duct or vessel in a plant.
duct, tube, channel, passage, pipeView synonyms
- ‘The formation of nodules of vascular tissue has been described as consisting of tracheas and islands of sieve elements in callus tissue grown in vitro.’
Late Middle English: from medieval Latin, from late Latin trachia, from Greek trakheia (artēria) ‘rough (artery)’, from trakhus ‘rough’.
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