from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Designating the fifth (last) pharyngeal pouch of the embryo
Sorry, no etymologies found.
From the fifth pouches the ultimobranchial bodies originate and are enveloped by the lateral prolongations of the median thyroid rudiment; they do not, however, form true thyroid tissue, nor are any traces of them found in the human adult.
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