TRINKLE
Trin"kle, v. i.
Defn: To act secretly, or in an underhand way; to tamper. [Obs.]
Wright.
TRINOCTIAL
Tri*noc"tial, a. Etym: [L. trinoctialis for three nights; tri- (see
Tri-) + nox, noctis, night.]
Defn: Lasting during three nights; comprising three nights.
TRINODAL Tri*nod"al, a. Etym: [L. trinodis three-knotted; tri- (see Tri-) + nodus knot.]
1. (Bot.)
Defn: Having three knots or nodes; having three points from which a leaf may shoot; as, a trinodal stem.
2. (Geom.)
Defn: Having three nodal points.
TRINOMIAL Tri*no"mi*al, n. Etym: [Pref. tri- + -nomial as in binomial: cf. F. trinôme.] (Math.)