Plural of rad, a radiation dose unit equal to 0.01 gray.

Informal plural abbreviation of radian (angle unit).

Informal plural for radiators, especially heating units.

Plural of rad meaning a political radical.

Plural of RAD, any of several acronyms (e.g., role activity diagram, rapid application development, reactive attachment disorder).

Initialism for Reactive Airways Dysfunction Syndrome, a medical diagnosis.