Radiography using a contrast medium.

Radiography without any contrast medium.

(politics, feminism) A type of feminism which calls for a radical reordering of society to eliminate male supremacy in all social and economic contexts.

(informal, astronomy) The radius of a celestial body when it is long enough to allow gravity to transform the body into a globe, typically estimated at approximately 300 kilometres.

Conversion to or joining a group, such as a religion or social organization, identification with which subsequently leads to extremism.

plural of radiation fog

plural of quasi-stellar radio-source

plural of giant radio galaxy

plural of hydraulic radius

plural of radial canal