antrum

views updated Jun 27 2018

an·trum / ˈantrəm/ • n. (pl. -tra / -trə/ ) Anat. a natural chamber or cavity in a bone or other anatomical structure. ∎  the part of the stomach just inside the pylorus.DERIVATIVES: an·tral / -trəl/ adj.

antrum

views updated May 18 2018

antrum (an-trŭm) n.
1. a cavity, especially a cavity in a bone. a. of Highmore the maxillary sinus (see paranasal sinuses). [ N. Highmore (1613–85), English physician] mastoid (or tympanic) a. the space connecting the air cells of the mastoid process with the chamber of the inner ear.

2. the part of the stomach adjoining the pylorus.