Defn: Having thirty sides.
TRIACONTER
Tri"a*con`ter, n. Etym: [Gr. (Gr. Antiq.)
Defn: A vessel with thirty banks of oars, or, as some say, thirty ranks of rowers.
TRIAD
Tri"ad, n. Etym: [L.trias, -adis, Gr. triade. See Three, and cf.
Trias, Trio.]
1. A union of three; three objects treated as one; a ternary; a trinity; as, a triad of deities.
2. (Mus.) (a) A chord of three notes. (b) The common chord, consisting of a tone with its third and fifth, with or without the octave.
3. (Chem.)
Defn: An element or radical whose valence is three. Triads of the
Welsh bards, poetical histories, in which the facts recorded are
grouped by threes, three things or circumstances of a kind being
mentioned together.
— Hindoo triad. See Trimurti.
TRIADELPHOUS
Tri`a*del"phous, a. Etym: [Pref. tri- + Gr. (Bot.)
Defn: Having stamens joined by filaments into three bundles. See
Illust. under Adelphous.