noun
- Plural of basion; the midpoint of the anterior margin of the foramen magnum in the skull.
Usage: anatomy; technical; used in anthropology and medical contexts
Examples
- The basions of different skulls were measured to compare anatomical variations.
- Anthropologists use the basion as a reference point in craniometric analysis.
- The distance from the basion to other cranial landmarks helps establish skeletal age.
- In forensic anthropology, the basion is one of several key anatomical markers examined.