[ ˌsʌbrə'geɪʃ(ə)n ]
■ noun Law the substitution of one person or group by another in respect of a debt or insurance claim, accompanied by the transfer of any associated rights and duties.
Derivatives
subrogate 'sʌbrəgeɪt verb
Origin
ME (in the general sense 'substitution'): from late L. subrogatio(n-) , from subrogare 'choose as substitute'.