Triad

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

(n.) A chord of three notes.

(n.) The common chord, consisting of a tone with its third and fifth, with or without the octave.

(n.) An element or radical whose valence is three.

录入:索尔

• So we, a simple triad on empty earth, were multiplied to each other, till we became all in all. 玛丽·雪莱. 最后一个人.

科尔校对