# AAX

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

## Senses

### 1. biochemistry

noun · CEFR C2 · Technical

a way to describe an amino acid that has a specific side chain called X.

For teachers: a notation representing an amino acid sequence or structure containing a specific side chain X. Uncountable in general reference; countable when referring to specific instances.

- The scientist studied how the AAX structure changed during the experiment.
- The researchers analyzed the AAX motif within the protein sequence to determine how the specific side chain influenced the overall folding mechanism.

Usage: Usually functions as a technical noun or a modifier before another noun like 'motif' or 'sequence'.

### 2. audio software

noun · CEFR C2 · Technical

a format for software tools used in professional music recording programs.

For teachers: Avid Audio Extension; a proprietary plug-in format developed by Avid Technology for use in Pro Tools. Often used as a modifier for 'plug-in'.

- You need to download the AAX version of the instrument to use it in Pro Tools.
- The studio upgraded its entire library to AAX 64-bit to ensure compatibility with the latest digital audio workstation hardware.

Usage: Commonly used as an attributive noun in the phrase 'AAX plug-in'.

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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.