# scalar

/ˈskeɪɫɝ/ (US)

Source: https://englishreference.com/word/scalar
Updated: 2026-08-27

## Senses

### 1. math/physics quantity

noun · CEFR C1 · Technical

a quantity or measurement that has size (magnitude) but does not have a direction.

For teachers: a physical quantity that is completely described by its magnitude and has no directional component.

- Temperature is a scalar because it tells you how hot it is, but not in a direction.
- Unlike velocity, which requires a directional vector, speed is a scalar quantity that only measures the rate of motion.

### 2. having magnitude only

adjective · CEFR C1 · Technical

describing a value that has size but no direction.

For teachers: pertaining to a quantity that possesses magnitude but lacks direction.

- The formula requires a scalar value rather than a complex coordinate.
- The researcher noted that the scalar properties of the field were easier to calculate than the vector components.

### 3. computing/data

adjective · CEFR C1 · Technical

relating to a single value, like a single number, instead of a list or a group of numbers.

For teachers: denoting a variable or data type that holds a single value at a time, as opposed to an array or a vector.

- The function expects a scalar integer as an input, not a list of numbers.
- Modern processors are designed to handle both scalar operations on single data points and SIMD operations on large vectors.

### 4. relating to a scale

adjective · CEFR C1 · Formal

relating to a scale or a series of steps or levels.

For teachers: of, relating to, or arranged in a scale or graduated series.

- The company uses a scalar system to decide how much to pay employees at different levels.
- The report highlighted the scalar differences in regional economic growth over the last decade.

### 5. musical scale

adjective · CEFR C2 · Technical

relating to a musical scale.

For teachers: pertaining to or consisting of the notes of a musical scale.

- The pianist practiced scalar patterns to improve her finger speed.
- The composition is characterized by rapid scalar passages that demand high technical proficiency from the soloist.

## Examples

- The temperature is a scalar quantity.
- In the physics lab, students measured the scalar value of the room's temperature and the vector direction of the wind.
- While the velocity of the object is a vector, the speed at which it moves is a scalar, representing only the magnitude of the motion.

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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.