What is the definition of word emersion?

"Emersion" is not a commonly used word in English. It is a less frequent variant of "immersion," which means:

* The act of submerging something in a liquid. For example, "The emersion of the bread in the batter ensured it was fully coated."

* The state of being deeply involved in something. For example, "He experienced complete emersion in his work, often forgetting to eat or sleep."

If you are encountering "emersion" in a specific context, it might be a typo or a less common usage. If you can provide more context, I can help you understand its meaning better.