# alpha

/ˈæɫfə/ (US) · /ˈælfɐ/ (UK)

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

## Senses

### 1. Greek letter

noun · CEFR B2

the first letter of the Greek alphabet (A, α).

For teachers: the name of the first letter of the Greek alphabet, often used symbolically to represent the beginning of a sequence.

- The professor explained that alpha is the first letter in the Greek system.
- In classical studies, the transition from alpha to omega is frequently used as a metaphor for the entirety of a process or lifespan.

### 2. software development

noun · CEFR B2

an early version of a computer program that is still being tested.

For teachers: an early, internally tested version of a software product, preceding the beta stage and typically containing significant bugs.

- The game is currently in alpha, so players should expect some technical problems.
- During the alpha phase, the development team focused on core mechanics rather than refining the user interface or fixing minor graphical glitches.

### 3. dominant person

noun · CEFR B2 · Informal

a person who is the leader or the most powerful in a group.

For teachers: the highest-ranking or most dominant individual in a social hierarchy.

- He always tries to be the alpha in every meeting by talking over others.
- Sociologists often debate whether the concept of an alpha truly applies to human corporate structures or if it is a misapplied biological metaphor.

### 4. finance/investing

noun · CEFR C1 · Technical

the extra money an investment makes compared to the market average.

For teachers: the excess return of an investment relative to the return of a benchmark index.

- The fund manager was praised for consistently generating alpha in a flat market.
- Active investors seek to achieve alpha through superior stock selection, whereas passive investors are content with matching the market's beta.

### 5. statistics

noun · CEFR C1 · Academic · Technical

the level of risk a scientist accepts for being wrong in a test.

For teachers: the probability of committing a type I error in a statistical hypothesis test.

- We set the alpha at 0.05 to ensure the results were statistically significant.
- Lowering the alpha level reduces the risk of a false positive but simultaneously increases the likelihood of failing to detect a real effect.

### 6. Generation Alpha

noun · CEFR B2

a person born between the early 2010s and the mid-2020s.

For teachers: a member of the demographic cohort succeeding Generation Z, typically born from 2010 onwards.

- My youngest nephew is an alpha and has used a tablet since he was a toddler.
- Marketers are already studying the digital habits of Generation Alpha, noting their unprecedented integration with artificial intelligence from early childhood.

### 7. dominant/first

adjective · CEFR B2

describing the most powerful person or the first thing in a list.

For teachers: denoting the first in a sequence or the most dominant in a social or biological hierarchy.

- The alpha male in the wolf pack leads the hunt.
- The alpha version of the hardware was bulky and inefficient, bearing little resemblance to the sleek consumer product released two years later.

## Examples

- The game is currently in alpha and has many bugs.
- The development team released the alpha version to internal testers to identify major crashes before the public trial.
- While the alpha build demonstrated the core mechanics of the engine, it lacked the optimization required for stable performance on consumer-grade hardware.

---

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.