# ABC

/ˈeɪˌbiˌsi/ (US)

Source: https://englishreference.com/word/abc
Updated: 2026-05-09

## Senses

### 1. the alphabet

noun

the letters of a language, usually the English alphabet from A to Z.

For teachers: the English alphabet in its entirety. Often used in the plural as 'ABCs' in informal contexts.

- The toddler is already starting to learn her ABCs by singing the song.

### 2. the basics

noun

the simplest and most important facts about a subject.

For teachers: the fundamental principles or rudimentary elements of a particular subject or activity.

- You need to master the ABC of nutrition before you start a strict diet.

### 3. broadcasting company

noun

a major television or radio network, such as those in the US or Australia.

For teachers: a proper noun referring to major national broadcasters, most notably the American Broadcasting Company or the Australian Broadcasting Corporation.

- The news report was first aired on ABC during the evening slot.

### 4. medical emergency steps

noun

the first three things doctors check: airway, breathing, and circulation.

For teachers: a mnemonic for airway, breathing, and circulation, representing the primary survey in emergency medicine.

- The paramedic followed the ABC protocol to ensure the patient was stable.

### 5. types of weapons

adjective

related to atomic, biological, or chemical weapons.

For teachers: pertaining to atomic, biological, and chemical warfare or weaponry. Often used as an attributive modifier.

- The soldiers were trained to handle an ABC attack during their basic training.

---

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.