antra
9.1
Small cavities inside organs such as the nose or stomach
- noun
- /ˈæntrə/
- Specialized
:
antra
- The doctor explained that the infection was located in the patient's nasal antra due to sinusitis.
- maxillary antra
Examples
-
During the examination, the radiologist noted the presence of fluid in the maxillary antra, indicating a possible blockage.
-
Two large antra were discovered in the patient's jawbone during the dental surgery.
-
A sinus series at that time revealed marked mucosal thickening in both maxillary antra without air-fluid levels (Figure 1A).
Academic text (1998)
Synonyms
chamber
vsantra
271
3.9
An enclosed space inside something, for example a cave or the body
is limited to cavities inside the body rather than general enclosed spaces
1
9.8
A natural hollow space inside a bone or organ
is the plural form used for multiple body cavities
9.9
A shallow hollow in an organ, for example in the brain
refers to more open cavities or chambers rather than narrow grooves
How Large
Surface Forms
Etymology
Antra is the plural of antrum, from Greek ántron meaning 'cave'. Doctors use antra to name hollow spaces in the body because these places are like small 'caves' inside organs such as the nose or stomach.