Supraglottis

Part of the voice box (larynx) - the area above the vocal cords that contains the epiglottis cartilage
Found on http://www.cancerhelp.org.uk/utilities/glossary/index.htm?search=s

Supraglottis

Supraglottis: The part of the larynx above the glottis (where the vocal cords are located). The supraglottic larynx includes the epiglottis as well as the false vocal cords, ventricles, aryepiglottic folds, and arytenoids.
Found on http://www.medterms.com/script/main/art.asp?articlekey=5600

supraglottis

The upper part of the larynx (voice box), including the epiglottis; the area above the vocal cords.
Found on http://www.cancer.gov/dictionary?expand=S

supraglottis

The upper part of the larynx, including the epiglottis; the area above the vocal cords. ... (12 Dec 1998) ...
Found on http://www.encyclo.co.uk/local/20973
No exact match found