The word "logo" itself is derived from the Greek word "logos", meaning "word, speech, thought, reason, or principle".
While prefixes are used to modify the meaning of words, there's no widely recognized prefix used specifically with "logo".
If you're looking to modify the meaning of "logo", you might consider using other words like:
* Brand: This is a common alternative that implies a wider concept than just the visual mark.
* Symbol: This focuses on the representational nature of the logo.
* Emblem: This emphasizes the distinctive and identifying qualities of the logo.
* Trademark: This highlights the legal protection associated with the logo.
Ultimately, the best term to use depends on the specific context and what you want to emphasize.