1.
[syn: ternary, treble, triple, triplex]
The Collaborative International Dictionary of English v.0.48:
Triplex \Tri"plex\, a. (Mach.)
Having three principal operative parts or motions, so as to
produce a three-fold effect.
[Webster 1913 Suppl.]
WordNet (r) 3.0 (2006):
triplex
adj 1: having three units or components or elements; "a ternary
operation"; "a treble row of red beads"; "overcrowding
made triple sessions necessary"; "triple time has three
beats per measure"; "triplex windows" [syn: ternary,
treble, triple, triplex]