Top Definition
The intense sensation of pleasure, ecstasy, euphoria and relief experienced when understanding or discovering a chemistry related phenomenon.

Often this fortunate event is accompanied by vocalisations and uncontrolled body movements.
'I wish I could chemgasm as easily as you can!'

'I just had a huge chemgasm after Collinsons tutorial today'

'I faked a chemgasm last night when Bob was explaining spin orbital coupling to me'
by fellyfoxeag November 29, 2012
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