diametral

As adjectives the difference between diametral and undefined

is that diametral is diametric while undefined is lacking a definition or value.

As adjectives the difference between radial and diametral

is that radial is arranged like rays that radiate from, or converge to a common centre while diametral is of, relating to, or measured across a diameter.

As nouns the difference between radial and diametral

is that radial is a radial tire / radial tyre while diametral is a diameter.

As adjectives the difference between diagonal and diametral

is that diagonal is (geometry) joining two nonadjacent vertices (of a polygon or polyhedron) while diametral is diametric.

As a noun diagonal

is something arranged diagonally or obliquely.

is likely misspelled.

has no English definition.

As an adjective diametral

is of, relating to, or measured across a diameter.

As a noun diametral

is a diameter.