# normality

/ˌnɔɹˈmæɫəti/ (US) · /nɔːmˈælɪti/ (UK)

Source: https://englishreference.com/word/normality
Updated: 2026-08-08

## Senses

### 1. being normal

noun · CEFR B2

the state of being normal or usual, especially after a time of trouble or change.

For teachers: the state or fact of being normal; the condition of conforming to a standard or regular pattern. Often used in the context of returning to a stable state after a disruption.

- After the long holidays, the family welcomed the return to normality.
- The government struggled to restore a sense of normality to the region following the natural disaster, focusing first on reopening schools and markets.

### 2. chemical concentration

noun · CEFR C1 · Technical

a way to measure how strong a chemical solution is.

For teachers: the concentration of a solution expressed in gram equivalent weights of solute per litre of solution.

- The scientist checked the normality of the acid before starting the experiment.
- To ensure the titration was accurate, the lab technician carefully calculated the normality of the sodium hydroxide solution.

Usage: Uncountable in this scientific sense.

### 3. statistical distribution

noun · CEFR C1 · Technical

how much a set of data looks like a standard 'bell curve' shape.

For teachers: the extent to which a set of observed data approximates a normal distribution.

- The student used a chart to check the normality of the test scores.
- Before applying parametric tests, the researcher performed a Shapiro-Wilk test to verify the normality of the sample distribution.

Usage: Often used in the context of 'testing for normality'.

## Examples

- The city is slowly returning to a sense of normality after the storm.
- Scientists observed that the chemical reaction only occurred under specific conditions of temperature and pressure, which they defined as the system's normality.
- The researcher argued that while the data set appeared to follow a normality, the presence of extreme outliers suggested a more complex underlying distribution that required a different statistical model.

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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.