lower respiratory tract smear
- noun
- Specialized
- The doctor ordered a lower respiratory tract smear to check for signs of infection in the lungs.
Examples
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Pathologists examined the lower respiratory tract smear for evidence of tuberculosis.
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A lower respiratory tract smear can help detect cancerous cells in patients with persistent cough.
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A lower respiratory tract smear is essential.
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The lower respiratory tract smear was done.
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A lower respiratory tract smear can help detect cancerous cells in patients with persistent cough.
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Pathologists examined the lower respiratory tract smear for evidence of tuberculosis.
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The doctor ordered a lower respiratory tract smear to check for signs of infection in the lungs.
Synonyms
A sample of cells taken from the lungs with a small camera to check for lung disease
A lab test that spreads lung mucus on a slide and checks it under a microscope for disease
Surface Forms
Morphology
lower + respiratory + tract + smear
The meaning is directly compositional: 'lower respiratory tract' identifies the part of the breathing system and 'smear' denotes a specimen spread on a microscope slide, so a learner who knows the constituent words can infer it is a sample from the lower breathing passages prepared on a slide for examination. This follows standard adjectival + noun composition common across languages and is therefore immediately understandable to learners familiar with the individual words.
Etymology
Lower respiratory tract smear names a clear image: a tiny sample taken from the lower respiratory tract, the deep parts of the lungs, and spread on a glass slide as a smear to look under a microscope. So, the term means 'a prepared slide sample from the lower lungs used to check for disease'.