Sentence:  ECLIPSE IN NEW YORK — this <WSD>multiple exposure</WSD> shows stages of the solar eclipse, starting at top left, as seen in New York City Monday afternoon. 
Meaning of the word marked with <WSD> tags:  A photograph produced by exposing film or some other photosensitive surface to focused light more than one time, usually by opening and closing a camera shutter repeatedly, thereby generating a picture consisting of superimposed images.