A homodiegetic narrator is one who is internal to the narrative, who is on the 'same' plane of exegesis as the story.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

Had the events described been narrated directly in the first person, the narrative would be homodiegetic (a character in the narrated world that s/he describes).    From Wordnik.com.  [Recently Uploaded Slideshows] Reference