A meta description is a short summary of a page that search engines may use under the title in search results.
It is not usually visible in the main body of the page. Its job is to help a searcher understand what they will get if they click.
In plain English
This is one part of how search systems find, interpret, compare or present information. You do not need to become an SEO technician to use the idea. The useful question is what job the term describes: discovery, understanding, ranking, presentation or measurement. Once you know that, the jargon becomes much less intimidating.
A real example
A bookkeeping page might use a meta description such as: “Bookkeeping for small creative businesses in Stockholm. Monthly support, payroll and year-end accounts explained clearly.” It gives the searcher a useful preview of the page.
The point is the relationship: a real person has a need and the search system is trying to connect that need with useful information. The term describes one part of that connection.
Why it matters
A useful description can make a result easier to choose, even though it is not a simple ranking switch.
For a small business, the point is not to chase every search feature. It is to make important pages easy to find, easy to understand and technically available. Knowing the term helps you separate a real problem from an impressive-sounding recommendation you may not need.
When do you actually need to care?
You need to care when an important page is not being found, when search traffic is arriving for the wrong reasons, when a redesign changes URLs or structure, or when someone recommends “SEO work” you cannot connect to a real problem. On a healthy small site, you do not need to obsess over every search-system detail. You need enough understanding to know what matters now and what can wait.
Useful questions to ask
- Is this about being discovered, understood, displayed or measured?
- Does it affect a page that is important to customers or revenue?
- What evidence shows there is a problem worth fixing?
What should you do with this?
Ask three things: what practical problem is this supposed to solve, how would you recognise that problem on your site, and what evidence would show that the work helped? Those questions turn most search jargon into a sensible business decision.
What this does not mean
Google may use different text from the page when it better matches the query.
The short version
Think invitation and summary, not keyword storage.
Related: title tags and SERPs.
Read more from Google on snippets and meta descriptions.