chord /kɔːd $ kɔːrd/ noun [countable]
[Sense 1: Date: 1400-1500; Origin: accord]
[Sense 2-3: Date: 1500-1600; Origin: cord; influenced by Latin chorda ( ⇒ cord) (]
[Sense 2: Origin: chord 'string of a musical instrument' (17-19 centuries))]

1. a combination of several musical notes that are played at the same time and sound pleasant together

2. strike/touch a chord (with somebody) to do or say something that people feel is familiar or true:
Many of the things she says will strike a chord with other young women.
He knew that what he was saying had touched a chord.

3. technical a straight line joining two points on a curve
HINT:
► Do not confuse with cord (=thick string), which has the same pronunciation.

[TahlilGaran] Dictionary of Contemporary English ▲

chord
noun
ADJ. major, minor | C, D, etc. | augmented, diminished a diminished 7th chord
dominant, tonic, etc. | 7th, 9th, etc. | full | broken | jazz | guitar, piano
VERB + CHORD play, strum
CHORD + NOUN change, progression, sequence

[TahlilGaran] Collocations Dictionary ▲