Subst. 2a decl. m.

Nom.	sing.	radius
Gen.	sing.	radii, (radi)
Dat.	sing.	radio
Acc.	sing.	radium
Voc.	sing.	(radie)
Abl.	sing.	radio

Nom.	pl.	radii, (radi)
Gen.	pl.	radiorum
Dat.	pl.	radiis, (radis)
Acc.	pl.	radios
Voc.	pl.	radii, (radi)
Abl.	pl.	radiis, (radis)