# DEC

/ˈdɛk/ (US)

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

## Senses

### 1. the month

noun · CEFR A1

Stands for December.

For teachers: Abbreviation for December.

- The deadline for the final project is Dec 15th.
- The fiscal year concludes on Dec 31, requiring all departments to submit their final expenditure reports by the following Monday.

### 2. a reduction

noun · CEFR C1 · Technical

Stands for decrement; a small decrease in a number or value.

For teachers: Abbreviation for decrement. Used in technical contexts to refer to the amount by which a variable is reduced.

- The programmer added a dec to the counter to count down to zero.
- The algorithm applies a constant dec to the signal strength until the threshold for disconnection is reached.

Usage: Often paired with 'inc' (increment) in programming logic.

### 3. to reduce a value

verb · CEFR C1 · Technical

to decrease a number or value, usually by one.

For teachers: to decrease a variable or value; frequently used as a command in assembly language or low-level programming.

- You need to dec the variable every time the loop runs.
- The processor will dec the register value automatically after each successful operation in the stack.

Usage: Usually functions as a transitive verb taking a variable or register as its object.

## Examples

- The program will dec the counter until it reaches zero.
- In this loop, we dec the index variable after each successful operation to track the remaining items.
- The processor executes a specific instruction to dec the register value, allowing for efficient countdown loops in the system's firmware.

---

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.