# vector database

CEFR C1 · Noun

Source: https://englishreference.com/word/vector-database
Updated: 2026-09-18

## Definition

A special database that stores information as numbers so a computer can find similar items quickly.

For teachers: A database optimized for storing and querying high-dimensional vector representations, typically used for similarity search.

## Examples

- The application stores document embeddings in a vector database.
- A vector database can quickly find semantically similar content.

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