# coincidence

/koʊˈɪnsɪdəns/ (US) · /kəʊˈɪnsɪdəns/ (UK)

Source: https://englishreference.com/word/coincidence
Updated: 2026-06-20

## Senses

### 3. mathematical point

noun · CEFR C2 · Technical

a point where two different things, like lines or shapes, meet or match perfectly.

For teachers: a point at which two or more functions, mappings, or geometric figures have the same value or position.

- The professor explained how to find the coincidence point of the two lines on the graph.
- In fixed-point theory, a coincidence point for two mappings is a point in their domain that maps to the same element in the codomain.

## Examples

- It was a coincidence that we both wore the same shirt today.
- By a strange coincidence, I ran into my old school teacher while on vacation in another country.
- While the detective suspected a conspiracy, the suspect maintained that their presence at the crime scene was a mere coincidence resulting from a late-night walk.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.