This is the 3956th most frequent Russian word.
житомире
"Житомире" is the prepositional case of "Житомир," referring to the city of Zhytomyr in Ukraine.
The word 'житомире' is used here as the prepositional case of the city name 'Житомир' to indicate the location where the action took place.
Я был в Житомире на выходных.
I was in Zhytomyr over the weekend.
Here, 'житомире' is again in the prepositional case, used after the preposition 'в' to denote the location being described.
В Житомире проживает около 260 тысяч человек.
Around 260,000 people live in Zhytomyr.
In this example, 'житомире' continues to demonstrate its function as the prepositional case to specify the place associated with the action of the verb 'работал'.