noun
: any of a series of outpocketings of ectoderm on either side of the pharynx that meet the corresponding visceral furrows and give rise to the visceral clefts of the vertebrate embryo
noun
: any of a series of outpocketings of ectoderm on either side of the pharynx that meet the corresponding visceral furrows and give rise to the visceral clefts of the vertebrate embryo
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012