ruth·er·ford 
(rŭthər-fərd)
(rŭthər-fərd)n. Abbr. rd
A unit expressing the rate of decay of radioactive material, equal to one million disintegrations per second, or one million becquerels.
[After Ernest Rutherford.]
- dissident
- dissilient
- dissimilar
- dissimilarity
- dissimilarly
- dissimilate
- dissimilation
- dissimilitude
- dissimulate
- dissimulation
- dissimulative
- dissimulator
- dissipate
- dissipated
- dissipatedly
- dissipatedness
- dissipater
- dissipation
- dissipative
- dissipator
- dissociability
- dissociable
- dissociably
- dissociate
- dissociation