Grad Student
Noun
だいがくいんせい
この大学院生は、えんげいが上手だ。
This graduate student has a green thumb.
あのまんるいホームランを打ったせん手、げん役の大学院生らしいよ。
That player who hit a grand slam is apparently an actual grad student.
大学院生ってどんなことをするんですか？
What kinds of things do graduate students do?
Remember how you learned that 大学院 means "graduate school" and 大学生 means "college student?" Well smush them together and you have a graduate student!
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.