any of several parts or organs of the mouth, as the labrum of a crustacean.
Origin of hypostome
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for hypostome
Historical Examples of hypostome
They are characterized by the fact that the hypostome, or "tongue" (fig. 45) is large and file-like, roughened by sharp teeth.Handbook of Medical Entomology
William Albert Riley