TRIDIMENSIONAL
Tri`di*men"sion*al, a. Etym: [Pref. tri- + dimensional.] (Chem.)
Defn: Having three dimensions; extended in three different directions.
TRIDING
Tri"ding, n.
Defn: A riding. See Trithing.
TRIDUAN Trid"u*an, a. Etym: [L. triduanus, fr. triduum space of three days; tri- + dies day.]
Defn: Lasting three lays; also, happening every third day. [R.]
Blount.
TRIDYMITE
Trid"y*mite, n. Etym: [Gr. (Min.)
Defn: Pure silica, like quartz, but crystallizing in hexagonal tables. It is found in trachyte and similar rocks.
TRIED
Tried,
Defn: imp. & p. p. of Try. Also adj.