[Ja.cob.son's organ] n [Ludvig L. Jacobson d. 1843 Dan. anatomist] (1885): either of a pair of small pits that are situated one on either side of the nasal septum (as in higher vertebrates) or in the buccal cavity and that are rudimentary in humans but developed in reptiles, amphibians, and some mammals as chemoreceptors
JACOBSON'S ORGAN
Meaning of JACOBSON'S ORGAN in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012