English · Word Candidate

radius

/ˈɹeɪ.di.əs/

Proposed by a contributor, not yet supported by evidence.

Also seen as: radii · radiuses · radiusing · radiused

Sense 1

Meaning · English

The long bone in the forearm, on the side of the thumb.

Noun

It is also obvious, and proved by experiment, that the rotatory motions observed in the hand proceed from the rotatory motions of the radius.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Meaning · English

The lighter bone (or fused portion of bone) in the forelimb of an animal.

Noun

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Meaning · English

To give a rounded edge to.

Verb

A comfortable grip is ensured by smoothing the surface of the handle and radiusing the edge.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

What does “radius” mean?

The long bone in the forearm, on the side of the thumb.

Is “radius” formal or informal?

No register label has been reviewed yet — treat it as neutral and check the usage notes above.