/truy"neuh ree/ , adj.
consisting of three parts, or proceeding by three; ternary.
[ 1425-75; late ME trynary trinarius of three kinds, equiv. to L trin ( i ) by threes (alter. of terni (deriv. of ter thrice; see TER-) on the model of bini by twos; see BINARY) + -arius -ARY ]