'amniotitis' originates from Greek, specifically the word 'amnion,' where 'amni-' referred to the 'membrane surrounding the fetus' and '-itis' meant 'inflammation.'

'amnion' changed from the Greek word 'amnion' and eventually became the modern English word 'amniotitis' by adding the suffix '-itis' to indicate inflammation.

Initially, it meant 'inflammation of the amnion,' and this meaning has largely remained the same in modern usage.