1611, from L. judiciarius "of or belonging to a court of justice," from judicium "judgment," from judicem (see judge). The noun meaning "a body of judges, judges collectively" is from 1802.
Main Entry: ju·di·cia·ry Pronunciation: ju-'di-shE-"er-E, -'di-sh&-rE Function: noun Inflected Form: plural-ries 1 a: a system of courts of law b: the judges of these courts 2: a branch of government in which judicial power is vested —compare EXECUTIVE, LEGISLATURE —judiciaryadjective
[
joo-dish-ee-er-ee, -dish-uh-ree] 
noun, plural -ar⋅ies, adjective