What is the move called when a pawn takes another pawn after that other pawn moves forward?

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Supernova603725

There's an odd legal move and I'm not sure what it's called. Pawn A takes Pawn B after Pawn B moves forward. Does anyone know what this is called? 

Lagomorph

En Passant

https://en.wikipedia.org/wiki/En_passant

Supernova603725

Thank you!