technicals

What is semantic search?

June 2, 2026 · 4 min read

MEANING MAP · SEMANTIC SEARCHRelated ideas sit close together.Search finds neighbors, not just exact spellings.coatparkajacketbanana"cheap winter coat"Closeness on the map means closeness in meaning.

Definition

Semantic search is a way of searching that matches the meaning and intent behind a query instead of just the exact words typed.[1]

At a glance

Why it matters for your business

Customers rarely type the exact words in your product titles or help docs. Semantic search bridges that gap, surfacing relevant products, articles, and answers from vague queries.[1] The payoff is fewer dead-end searches, higher conversion, better support self-service, and customers who find what they want faster.

How it works, plainly

A model converts every product or document into a list of numbers, called an embedding, that represents its meaning.[4] Your customer’s query is converted the same way. The system then returns items whose numbers sit closest, meaning closest in meaning, even if no shared words exist.[3]

Bottom line

Semantic search lets your site understand what people mean, not just what they type, so customers find the right product or answer even when their words do not match yours.

Connects to Computer Science

References

  1. What is Semantic Search? A Comprehensive Semantic Search Guide. Elastic www.elastic.co
  2. Semantic Search vs Keyword Search: Key Differences Explained. CelerData celerdata.com
  3. Semantic search vs. keyword search: when to use each. Redis redis.io
  4. Embeddings, Vector Databases, and Semantic Search. DEV Community dev.to