tri-D adjective 1noun 1forms 1 adjective1 •Three-dimensional.They were still engaged in their mental game of tri-D chess, whispering moves back and forth when they assumed Captain Gold wasn't listening. — 2007 noun1 •Synonym of tri-V (“a system capable of recording or displaying three-dimensional video”).Photos of smaller versions of him — I guessed his children — lined the ultra-modern furniture; as I swept a hand over a cabinet, a couple of tri-Ds even came to life. — 2016 formstri-Ds
