# simultaneous

/ˌsaɪməɫˈteɪniəs/ (US) · /sˌɪməltˈeɪniəs/ (UK)

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

## Senses

### 2. math equations

adjective · CEFR C1 · Technical

describes two or more equations that you solve at the same time to find the same answer.

For teachers: relating to a set of equations that are satisfied by the same values of the variables. Often used in the phrase 'simultaneous equations'.

- In algebra class, we learned how to solve simultaneous equations with two variables.
- To determine the point of intersection between the two lines, the student had to treat the linear functions as a system of simultaneous equations.

Usage: Usually appears in the fixed phrase 'simultaneous equations'.

## Examples

- The two explosions happened simultaneously.
- The orchestra played the final chord simultaneously to mark the end of the concert.
- The simultaneous translation allowed delegates from different countries to follow the speech without waiting for a written transcript.

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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.