A cavern or hole esp an anatomical cavity or sinus
- an all-natural cavity or hollow in a bone
- A cavern or hole, esp. an anatomical hole or sinus
A general term for a nearly closed hole or chamber. For instance, the antrum of this stomach (gastric antrum) is a portion prior to the socket, which is lined by mucosa and does not produce acid. The paranasal sinuses is named the frontal antrum, ethmoid antrum, and maxillary antrum.
"a cave or hole," late 14c., health Latin, from Greek antron "cave."
The vacant space inside any hollow organ or bodily structure.
antrum (associated with the tummy) [Antrum pyloricum]
- pyloric antrum [Antrum pyloricum]
(n.) A cavern or cavity, esp. an anatomical hole or sinus
The antrum pyloricum is small and not very distinctly marked.