HYPOGLOTTIS, or HYPOGLOSSIS, composed of ὑπὲρ, under, and γλωττα, 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 hypoglottides, are situated under it, near the vena ranulares, one on each side of the tongue. They serve to secrete a kind of serous matter of the nature of saliva, which is discharged into the mouth by little ducts near the gums.