chorda
chorda
Latin (from Greek)
“The word for a string stretched across a lyre became the word for three notes played at once — the physical object disappeared, but the name stayed.”
Chorda is Latin, borrowed from Greek khordē, meaning gut string or intestine — specifically the intestine of an animal stretched and dried for use as a string on a lyre or harp. The word was physical: a chord was a thing you could touch, made from the gut of a sheep or goat. When you plucked a khordē, it vibrated and produced a tone. The word named the source of the sound, not the sound itself.
The meaning shift happened gradually in medieval musical theory. When theorists discussed harmony, they wrote about strings (chordae) vibrating in mathematical ratios. Pythagoras had demonstrated that a string stopped at its midpoint produced a tone an octave higher. Two strings vibrating together produced a concordance. By the medieval period, 'chord' began to refer to the harmonious combination of sounds rather than the strings that produced them. The object became the abstraction.
Modern music theory defines a chord as three or more notes sounding simultaneously. A triad — three notes stacked in thirds — is the most basic chord. There are four types of triads, dozens of seventh chords, and hundreds of extended and altered chords. The entire harmonic system of Western music is built on these combinations. The word that meant 'gut string' now names the vertical dimension of musical structure.
Guitarists learn chord shapes. Pianists learn chord voicings. Songwriters build progressions — sequences of chords that create the harmonic journey of a song. The four-chord progression I-V-vi-IV underpins an estimated quarter of all pop songs. The Latin word for the intestine of a sheep, stretched across a frame and plucked, has become the foundation of popular music. The sheep's contribution goes unacknowledged.
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Today
The chord is the atom of Western harmony. Every pop song, every hymn, every jazz standard, every film score is built from sequences of chords. A guitarist who knows five chord shapes can play thousands of songs. A songwriter who understands chord progressions has the toolbox for every emotion: major for brightness, minor for shadow, diminished for tension, augmented for strangeness.
The Greek khordē was a piece of dried intestine. It vibrated when plucked and produced a tone. Three thousand years later, the word names an abstraction — a vertical slice of simultaneous pitches — that has no physical existence at all. The string disappeared. The name survived. The vibration became a concept, and the concept became the foundation of all Western music.
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