SEO Glossary - AI Glossary - Terms & Definitions Simplified
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Meta Description
A meta description is an HTML tag that provides a brief summary of a webpage's content, appearing directly beneath the title tag in search engine results.
Meta Description Optimization
Meta description optimization is the copywriting process of crafting a compelling, 150-160 character summary of a webpage to maximize organic click-through rate (CTR) on the SERP.
Meta Robots Tag
A meta robots tag is an HTML snippet placed in the head section of a webpage that gives search engine crawlers specific, page-level instructions on how to handle the content.
Meta Title (Title Tag)
A meta title, or title tag, is the HTML element that specifies the title of a webpage.
Microdata
Microdata is a specific, somewhat legacy HTML specification used to nest structured data (Schema Markup) directly within the existing HTML tags of a webpage.
Minification
Minification is the critical technical SEO process of stripping all unnecessary, redundant characters from a website's source code, specifically HTML, CSS, and JavaScript files-without altering how the browser actually executes the code.
Minification (CSS/JS)
Minification is the technical SEO process of removing all unnecessary characters, such as whitespace, line breaks, comments, and block delimiters, from source code (HTML, CSS, and JavaScript) without altering its functionality.
Mobile-First Design
Mobile-First Design is the fundamental, non-negotiable architectural strategy of designing and developing a website specifically for the constraints and user experience of a mobile device (smartphones) before scaling the design up for larger desktop screens.
Mobile-First Indexing
Mobile-first indexing is Google's official algorithmic paradigm where the mobile version of a website's content, architecture, and structured data is used as the primary baseline for evaluating relevance and determining rankings.
Model Context Protocol (MCP)
The Model Context Protocol (MCP) is an advanced, standardized technical framework that allows Large Language Models (LLMs) to securely connect to and interact with external, real-world data sources, such as a company's proprietary database, a live CRM, or a private API, in real-time.
Multi-Location SEO
Multi-location SEO is the highly complex strategy of optimizing a single brand or franchise to dominate local search results across dozens, hundreds, or thousands of different geographic markets simultaneously.
Multimodal Search
Multimodal Search is the advanced capability of modern AI search engines (like Google Gemini) to process, analyze, and synthesize multiple different types of data formats simultaneously, including text, high-resolution images, audio files, and live video-within a single query.
MUM (Multitask Unified Model)
MUM (Multitask Unified Model), introduced by Google in 2021, is an incredibly powerful, AI-driven natural language processing model that is 1,000 times more powerful than BERT.