HYPOGLOSSIS, OR HYPOGLOSSIS, (composed of υπο under, and γλωττις tongue), in anatomy, is a name given to two glands of the tongue. There are four large glands of the tongue; two of them called hypoglossides, situated under it, near the venæ ranulares; one on each side of the tongue. They serve to filtrate a kind of serous matter of the nature of saliva, which they discharge into the mouth by little ducts near the gums.