Antrum
//ˈæn.tɹəm// noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 A bodily cavity, especially one having bony walls, especially one in the sinuses.
"In forms with a modified outer antral fence, both this and the adjacent distal band of the domiciliar wall may be concave and form the antrum (Figs. 6 J-K; 7 B), and in some forms the antrum apparently is formed by the dolon alone (dolonal antrum)."
- 2 a natural cavity or hollow in a bone wordnet
Example
More examples"In forms with a modified outer antral fence, both this and the adjacent distal band of the domiciliar wall may be concave and form the antrum (Figs. 6 J-K; 7 B), and in some forms the antrum apparently is formed by the dolon alone (dolonal antrum)."
Etymology
From Latin antrum, from Ancient Greek ἄντρον (ántron, “cave”). Doublet of antre.
Related phrases
More for "antrum"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.