TRIPETALOUS
Tri*pet"al*ous, a. Etym: [Pref. tri- + petalous: cf. F. tripétale.]
(Bot.)
Defn: Having three petals, or flower leaves; three-petaled.
TRIP HAMMER
Trip" ham`mer.
Defn: A tilt hammer.
TRIPHANE
Tri"phane, n. Etym: [Gr. Tri-) + to appear cf. F. triphane.] (Min.)
Defn: Spodumene.
TRIPHTHONG Triph"thong, n. Etym: [Pref. tri- + -phthong, as in diphthong: cf. F. triphthonque.] (Orthoëpy)
Defn: A combination of three vowel sounds in a single syllable, forming a simple or compound sound; also, a union of three vowel characters, representing together a single sound; a trigraph; as, eye, -ieu in adieu, -eau in beau, are examples of triphthongs.
TRIPHTHONGAL
Triph*thon"gal, a.
Defn: Of or pertaining to a triphthong; consisting of three vowel sounds pronounced together in a single syllable.