# newton

/ˈnutən/ (US) · /njˈuːtən/ (UK)

Source: https://englishreference.com/word/newton
Updated: 2026-08-15

## Senses

### 1. unit of force

noun · CEFR C1 · Technical

a unit used in physics to measure force.

For teachers: the SI derived unit of force, defined as the force needed to accelerate one kilogram of mass at the rate of one metre per second squared.

- The weight of a small apple is roughly one newton.
- The engineer calculated that the structural support would need to withstand a load of several thousand newtons to ensure safety during high winds.

Usage: Symbolised by the capital letter N; the word itself is not capitalised when used as a unit.

### 2. surname or place name

noun · CEFR B2

a common last name or a name for many towns and cities.

For teachers: a common habitational surname of English origin or a toponym for various locations.

- Sir Isaac Newton was a famous scientist who studied gravity.
- The historical records indicate that the Newton family held significant land in the county for over three centuries before the industrial revolution.

### 3. fruit cookie

noun · CEFR B2 · American English

a type of soft cookie filled with fruit paste, like a Fig Newton.

For teachers: a trademarked or genericised term for a pastry sheath containing fruit paste.

- He packed a couple of fig newtons in his lunch for a quick snack.
- While the brand name is widely recognised, many bakeries now produce their own version of the classic fruit-filled newton using local ingredients.

## Examples

- The force of gravity on a small apple is about one newton.
- Engineers must calculate the exact number of newtons required to move the heavy steel beam safely.
- In classical mechanics, the relationship between mass and acceleration is quantified using the newton as the standard derived unit of force within the International System of Units.

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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.