'amoebaeum' originates from the Greek word 'amoibē,' meaning 'change' or 'exchange,' combined with the Latin suffix '-aeum,' indicating a place or environment.

'amoibē' transformed into the Latin 'amoeba,' and eventually became the modern English word 'amoebaeum' as a fictional term.

Initially, it meant 'change' or 'exchange,' but over time it evolved into its current fictional meaning of 'a place where amoebas thrive.'