Crossword Genius

Image etc. that spreads rapidly on the Internet (4)

Ross

I believe the answer is:

meme

(Other definitions for meme that I've seen before include "Cultural belief that assumes a life of its own" , "Transmitted cultural idea" , "Behavioural trait" , "Concept that spreads rapidly on the Internet" , "Question that spreads on the internet" .)

I've seen this clue in the Irish Times (Simplex) and The Irish Times.
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