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[Late Latin protonotarius, from proto- first in time + Latin notarius stenographer]
: a chief clerk of any of various courts of law
pro·thon·o·tar·i·al [prə-thÄ -nə-ter-ē-əl]
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.