What is colonial prefix?

There is no official term called "colonial prefix". It seems like you're asking about a word or phrase related to the concept of colonialism.

To better understand your question, please clarify what you mean by "colonial prefix".

For example, are you referring to:

* Prefixes used in the names of colonies: Like "New" in New England, "South" in South Africa, or "West" in West Indies.

* Words or phrases that describe a colonial relationship: Like "imperial," "subjugation," "exploitation," or "dependency."

* Prefixes used in the names of organizations or institutions connected to colonization: Like "Colonial Office," "British East India Company," or "Dutch West India Company."

Once you provide more context, I can give you a more accurate and helpful response.