adj., n., & v.
adj. 1 existing in three examples or copies. 2 having three corresponding parts. 3 tripled.
n. each of a set of three copies or corresponding parts.
v.tr. 1 make in three copies. 2 multiply by three. in triplicate consisting of three exact copies. triplication n.
[ ME f. L triplicatus past part. of triplicare (as TRIPLEX) ]