SEO Glossary: Definitions of Commonly Used Terms in SEO


SEO can be a confusing topic, especially when you are first starting out. There are a lot of commonly used terms and jargon that can be difficult to understand. In this SEO glossary, we will define some of the most common terms in SEO. This will help you get started on your SEO journey and make sure that you are using the correct terminology!

Anchor Text

The visible, clickable text that contains a hyperlink. On websites, this is usually shown as blue, underlined text, often describing the content/topic of the destination page. For example, the text: ‘Sydney SEO Company‘ constitutes anchor text.


An incoming link to a website or web page, or, put slightly differently – a link from one website to another. Say site A has a hyperlink to another website B, that hyperlink would be considered a backlink. Importantly, the Google search engine uses backlinks to rank websites across the net – the more sites there are backlinking to your own site (e.g. for content) the better Google will rank you.

Conversion Rate

The percentage of users who take a desired action on your website. The desired action can be anything from making a purchase, to signing up for a newsletter or taking some other kind of action.


The process that search engines use to index websites and their content. This is done by using web crawlers (also called spiders or bots). Crawling allows search engines to retrieve relevant sites and webpages when users search for their specific content.

Domain Authority

A score that predicts how well a website will rank on search engines. It is measured on a scale from 0-100, with 100 being the highest possible score. The higher your domain authority, the better chance you have of ranking on Google.


The HTML tags that are used to structure the content on a webpage. The most common headings are H1 (heading), H2 (subheading), and H3 (sub-subheading). Headings help Google understand the main topics of your web page, and they also make it easier for users to scan your content.


The database that search engines use to store all of the websites and webpages that they have crawled. When you search for something on Google, the results that you see are pulled from the index.


A word or phrase that is used to match a user’s query in a search engine. For example, if someone is searching for “SEO tips,” the keyword would be “SEO.”

Link Building

The process of acquiring links from other websites to your own. Link building is a key part of SEO, as it helps to increase the authority of your website and improve your chances of ranking on Google.

Meta Description

A short description of a website or web page that is displayed in the search results. The meta description is typically used to give users a preview of what the website or web page is about.


Short for “search engine results page.” This is the page that a user sees after they enter a query into a search engine. The SERP includes the results of the search, as well as any ads that may be relevant to the query.

Just the tip of the iceberg

Hopefully, this SEO glossary has helped to clear up some of the confusion surrounding SEO. However, this is just the tip of the iceberg when it comes to SEO terms and jargon. So be sure to consult other resources if you come across a term that you don’t understand.

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By Flavia Calina

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