'anastomosis' originates from Greek, specifically the word 'anastomōsis,' where 'ana-' meant 'up' or 'again' and 'stoma' meant 'mouth.'

'anastomōsis' was adopted into Late Latin as 'anastomosis,' and eventually became the modern English word 'anastomosis.'

Initially, it meant 'the opening of one thing into another,' but over time it evolved into its current medical and scientific meanings of 'a connection or joining between two structures.'