ˈjȯində(r) noun
( -s )
Etymology: French joindre to join — more at join
1. : act of joining : a putting together : conjunction
simultaneous production and joinder of these two pieces at the Argentine Embassy — Blue Book on Argentina
2.
a. : a joining of parties as plaintiffs or defendants in a suit
b. : acceptance of an issue tendered
c. : a joining of causes of action or defense or of parties in an indictment
d. : a joining of two or more parties in a common transaction