What is singular and plural form of radii?

Answer 1

Classically, the plural should be radii, (usually pronounced ray-dee-eye) because 'radius' is a Latin word.

However, in modern English, radiuses is acceptable.

Answer 2

The plural form for the singular noun radius is radii or radiuses, both are now accepted.

Answer 3

Radius is the singular. The plural is Radii. 1 radius, more than 1 Radii.

Answer 4

The plural form of radius is radii or radiuses. Both forms are accepted.

Answer 5

The noun 'radii' is the plural form of the singular noun 'radius'.

Answer 6

Assuming that the question is seeking the plural for radius rather than "plaurl" for "radious", the answer is radii.

Answer 7

The plural noun of "Radius" is "Radii"

Answer 8

Radii is plural. Radius is singular.

Answer 9

radiuses

Answer 10

Radii.