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A union of three; three objects treated as one; a ternary; a trinity; as, a triad of deities.

Having stamens joined by filaments into three bundles. See Illust. under Adelphous.

Having the characteristics of a triad; as, boron is triadic.

The One First Cause; also, one of the triad of Hindoo gods. The triad consists of Brahma, the Creator, Vishnu, the Preserver, and Siva, the Destroyer.

thirds, do not clearly indicate its fundamental tone or root; the chord of the diminished triad, and the diminished seventh.

e two superior maxillary bones in man; -- called also harmonic, and harmony. -- Harmonic triad (Mus.), the chord of a note with its third and fifth; the common chord.

Natural gas, etc. See under Fat, Gas. etc. -- Natural Harmony (Mus.), the harmony of the triad or common chord. -- Natural history, in its broadest sense, a history or description of nature as a whole, incuding the sciences of botany, zoölogy, geology, mineralogy, paleontology, chemistry, and physics. In recent usage…

i. 4. Ye elements, the eldest birth Of Nature's womb, that in quaternion run. Milton. The triads and quaternions with which he loaded his sentences. Sir W. Scott.

One of the triad of Hindoo gods. He is the avenger or destroyer, and in modern worship symbolizes the reproductive power of nature.

A ternion; the number three; three things taken together; a triad. Some in ternaries, some in pairs, and some single. Holder.

The triad, or trinity, of Hindoo gods, consisting of Brahma, the Creator, Vishnu, the Preserver, and Siva, the Destroyer. [Spelled also Trimurtti.]

A triad; trinity. [R.] A single trine of brazen tortoises. Mrs. Browning. Eternal One, Almighty Trine! Keble.

Any union of three in one; three units treated as one; a triad, as the Hindoo trinity, or Trimurti.

ing combined with, substituted for, or compared with, three atoms of hydrogen; -- said of triad atoms or radicals; thus, nitrogen is trivalent in ammonia.

d has a valence of one; the atoms of oxygen, nitrogen, and carbon are respectively dyads, triads, and tetrads, and have a valence respectively of two, three, and four.