Radius
- Pronunciation
- /RAY-dee-uhs/
- Category
- Anatomy
- Singular
- Radius
- Plural
- Radii
Definition
A major longitudinal vein running through an insect’s wing and typically branching towards the leading edge of the wing.
Etymology
From Latin 'radius', meaning 'ray, staff, or rod', referring to its shape.
Example
The radius of the beetle's wing is essential for its flight mechanics.
Synonyms
- Radial vein
Related Terms
- Wing veins
- Radial vein
Usage Notes
The term 'radius' may also refer to bone in vertebrate anatomy, but in entomology, it describes a vein in the wings of an insect.