surrogate n[Latin surrogatus , past participle of surrogare subrogare to substitute, from sub- in place of, under + rogare to ask]
1 : one acting in the place of another
: one standing in loco parentis to a child
2 often cap
: the judge or judicial officer of a Surrogate's Court or Surrogate's office
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.