(每日一词）projector

Projector /prəˈdʒektər/ n. （电影）放映机；投影仪

meaning: a device for showing films or images on a screen or other surface 

1) 词根：pro-向前（progress)

2) 词根：ject- 扔（reject)

3) 后缀：-or 名词后缀