The most common and most likely answer to this crossword clue is the 8 letter word POLAROID
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More clues leading to the result POLAROID
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The cryptic/wordplay part
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What does POLAROID mean?
POLAROID noun- A sheet of plastic embedded with microscopic crystals of herapathite or similarly acting material, so that light passing through it is polarised.
- (in the plural) Spectacles made with lenses of polaroid, once used to view certain 3-D movies.
- (in the plural) Polaroid sunglasses.
- A camera that develops its own film.
- A print from such a camera.
- To photograph with a polaroid camera.