
The subglottis or subglottic region is the lower portion of the larynx, extending from just beneath the vocal cords down to the top of the trachea. The structures in the subglottis are implicated in the regulation of the temperature of the breath. Narrowing of the subglottis is known as subglottic stenosis and may require a tracheotomy to correct....
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http://en.wikipedia.org/wiki/Subglottis

The lowest part of the larynx; the area from just below the vocal cords down to the top of the trachea.
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http://www.cancer.gov/dictionary?expand=S

The lower part of the larynx; the area from just below the vocal cords down to the top of the trachea. ... (12 Dec 1998) ...
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http://www.encyclo.co.uk/local/20973

Subglottis: The lower part of the larynx just below the vocal cords down to the top of the trachea, which takes air to the lungs.
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http://www.medterms.com/script/main/art.asp?articlekey=5579

Part of the voice box (larynx) - the area below the vocal cords that contains the cricoid cartilage and continues down into the windpipe (trachea).
Found on
https://www.encyclo.co.uk/local/20753
No exact match found.