It’s participle. I was a bit too lazy to look it up as I thought they are so similar it shouldn’t be an issue. It is no linguistic jargon, though. (I am no linguist).
Both the german and english term were heavely used in school. It would be odd that the term has never been heard of before considering how much native English speakers tend to complain on how grammar intensive their language subjects were in school. 
EDIT: From a textbook for language learners. Judging from the layout it is not meant for linguists 
EDIT: Btw., I explicitely stated that I needed the two terms for differentiation, as both words I am refering to are verbs. I could also have called them Tinky Winky and Dipsy for that matter. The naming isn’t important for the explanation.