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This glossary is your go-to resource for understanding the most important terms in UX design, Webflow development, SEO, and front-end strategy—from A/B testing and atomic design to z-index and zero-scroll interactions.

Whether you're a designer, marketer, or developer, these definitions are written to be accessible, practical, and useful across every stage of a digital project. We’ve included platform-specific notes (like WordPress, Framer, and Shopify), key coding concepts (like Flexbox and Core Web Vitals), and links to real-world use cases throughout our.