Bottom part of the pharynx, the part of the throat that connects to the esophagus(noun)
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Use "hypopharynx" in a sentence
"Hypopharyngeal sclerites: in bees, a pair of strap-like pieces along the hypopharynx to the mentum: see also epipharyngeal sclerites."
"Lepidoptera and Diptera, to maxillary structures: has also been used for the hypopharynx, and that use might be adopted: a median organ of the hypopharynx in Apterygota."
"Palate: = hypopharynx; q.v. Paleace: chaff or chaffy: = paleaceous."