Index of English words, starting with "tr"

(1) - Trigonous (a.) Same as Trigonal.

(1) - Trigraph (n.) Three letters united in pronunciation so as to have but one sound, or to form but one syllable, as -ieu in adieu; a triphthong.

(1) - Trihedral (a.) Having three sides or faces; thus, a trihedral angle is a solid angle bounded by three plane angles.

(1) - Trihedron (n.) A figure having three sides.