Glossary of Terms
We have compiled this list of terms and definitions to help you better understand the terminology used within the web development community.
SEO Glossary
There are 7 entries in this glossary.Heading Order<h1> through <h6>) follow a logical, sequentially descending hierarchy without skipping levels. Proper heading order gives screen reader users a reliable document outline and helps search engines understand content structure. Hits - 44 Synonyms - Heading Hierarchy, Heading Levels, Sequential Headings | |
Hreflang Hits - 194 Synonyms - Language Targeting, Regional SEO | |
Hreflang Tag Hits - 186 Synonyms - Language Tag, Multilingual SEO | |
HTML Has Lang Hits - 192 Synonyms - Lang Attribute, Page Language | |
HTML Headings Hits - 202 Synonyms - Heading Structure, H1-H6, Page Outline | |
HTML Page Size Hits - 199 Synonyms - Document Size, Markup Weight | |
HTTP Status Code Hits - 188 Synonyms - Status Code, Response Code, 404/301/200 |
What Does "Liquid Purple" mean?
noun | / LIK-wid PUR-pul /
- (biochemistry) Also known as visual purple or rhodopsin — a light-sensitive receptor protein found in the rods of the retina. It enables vision in dim light by transforming invisible darkness into visible form. Derived from the Greek rhódon (rose) and ópsis (sight), its name reflects its delicate pink hue and vital role in perception.
- (modern usage) Liquid Purple — a digital marketing agency specializing in uncovering unseen opportunities and illuminating brands hidden in the digital dark. Much like its biological namesake, Liquid Purple transforms faint signals into clear visibility — revealing what others overlook and bringing businesses into the light.
Origin: From the scientific term rhodopsin, discovered by Franz Christian Boll in 1876; adopted metaphorically by a marketing firm dedicated to visual clarity in the age of algorithms.

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