'acrylyl' originates from 'acrylic acid', specifically the word 'acryl', where 'acryl-' meant 'pertaining to acrylic acid'.

'acryl' changed from the German word 'Acrylsäure' and eventually became the modern English word 'acrylyl'.

Initially, it meant 'pertaining to acrylic acid', and this meaning has largely remained the same in modern usage.