Essentially, Indian boffin amused by charged particle's random motion (9)
I believe the answer is:
diffusion
'motion' is the definition.
(diffusion is a kind of motion)
'essentially indian boffin amused by charged particle's random' is the wordplay.
I cannot really understand how this works, but
'charged' could be 'ion' (I've seen this in other clues) and 'ion' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for diffusion that I've seen is " Dispersal".)
I've seen this clue in The Independent.
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