What part of speech is the suffix emia?

The suffix "-emia" is not a part of speech itself. It's a suffix, which means it's a morpheme (a meaningful unit) added to the end of a word to modify its meaning.

Specifically, "-emia" is a medical suffix indicating a condition related to the blood.

For example:

* Anemia: A condition of low red blood cell count.

* Leukemia: Cancer of the blood-forming tissues.

* Hyperglycemia: High blood sugar.

While the suffix itself isn't a part of speech, the words it creates will fall into different parts of speech depending on their function in a sentence.