Etymology

The word chord is a variant of cord, influenced by Latin chorda (“cord”), from Ancient Greek khordḗ (“string of gut, lyre string”). It is unrelated to French accord (“chord”).

Pronunciation

In British English: /kɔːd/ (stress on the single syllable). In General American English: /kɔɹd/. The stress is always on the first (and only) syllable. It rhymes with board or cored, and is a homophone of cord in some accents.

Meanings

Noun (plural: chords):

• Music: A group of three or more notes played together, creating harmony. For example, a major chord sounds bright and happy.
• Geometry: A straight line connecting two points on a curve, like the longest chord in a circle being its diameter.
• Engineering: A horizontal beam in a truss structure, providing support in bridges or roofs.
• Aeronautics: The width of an airplane wing from front to back, measured along the airflow direction.
• Anatomy: A cord-like structure, such as the spinal cord or vocal cords.
• Other: In computing, a multi-key shortcut; in graph theory, an edge connecting cycle vertices.

Verb (chords, chording, chorded):

• To add musical chords to a piece of music.
• To harmonize or agree with something.
• To string or tune a musical instrument.

Morphology and Grammar Notes

Chord is primarily a countable noun (e.g., “play a chord”) but can be uncountable in music contexts (e.g., “chord progressions”). As a verb, it follows regular conjugation. No irregular forms. It’s often confused with cord (rope), a common spelling mix-up due to homophony.

Interesting Facts

In music history, chords revolutionized Western music in the Baroque era, enabling complex harmonies in composers like Bach. The term “striking a chord” idiomatically means evoking an emotional response, from the idea of a musical note resonating deeply.

Tips to Learn It Easier

Associate the music meaning with guitar strumming—visualize fingers pressing strings to form a chord. For geometry, draw a circle and connect two points with a straight line. Mnemonic: “Chord links points like a harmonious string.” Practice by listening to songs and identifying chord changes.

Cultural and Contextual Features

In popular culture, chords are central to genres like rock and jazz; think of the iconic I-IV-V chord progression in blues music. In aviation, wing chord affects plane stability. Contextually, “vocal cords” ties to anatomy in medical discussions, while “power chord” is a guitar term from heavy metal.

Sentence Examples

Simple: She played a C major chord on the piano.

Medium: The bridge’s truss includes strong steel chords for support.

Complex: While analyzing the circle’s properties, the mathematician noted that the longest chord, known as the diameter, passes through the center and equals twice the radius.

Synonyms, Antonyms, and Common Combinations

Synonyms: Harmony (music); segment (geometry); beam (engineering).

Antonyms: Discord (in music sense); tangent (geometry, as a touching line vs. intersecting).

Common combinations: Major/minor chord, vocal cords, power chord, strike a chord, chord progression, wing chord.

Mini-Tasks for Practice

• Make a sentence using chord in a musical context.
• Find a synonym for chord in geometry and use it in a sentence.
• Listen to a song and name one chord you hear (e.g., via YouTube tutorials).
• Explain the difference between chord and cord to a friend.